APEX INSTITUTE was conceptualized in May 2008, keeping in view the dreams of young students by the vision & toil of Er. Shahid Iqbal. We had a very humble beginning as an institute for IIT-JEE / Medical, with a vision to provide an ideal launch pad for serious JEE students .
Synthesis and Crystal Structure of Anickel (II) and Zinc (II) Complex From 1,...IOSRJAC
:The title mononuclear nickel and zinc complexes, Ni(C11H9N4S3)2andZn(C11H9N4S3)2 .2(C3H7NO), were prepared by the reaction of Nickel(II) or Zinc(II)acetate with 1,5-bis[(2- thiophenyl)methylidene]thiocarbonohydrazide in a methanol solution. It features mono-deprotonated bisbidentate ligands, which coordinate to metal (II) ions by hydrazylN and thiocarbony lS atoms, yielding a tetracoordinated metal ions complexes. In Ni(II) complex the geometry around the metal ion is described as square planar. In the Zn(II) the metal atom shows severely tetrahedral distortion from anideal square-planar coordination geometry, as reflected by the dihedral angle between ZnN2and ZnS2 planes of 73.03(13)°. Two intramolecular hydrogen bonds are observed between the solvate dmf molecules and the coordinated ligands:N2—H2N…O1i and N6—H6N…O2 ii in this complex
A detailed study of Transition Metal Complexes of a Schiff base with its Phys...Abhishek Ghara
The many activities of metal ions in biology have stimulated the development of metal based therapeutics. It has been found that biologically active compounds become more effective and bacteriostatic upon chelation with metal ions also the biological activity of many drugs has been shown to be enhanced on complexing with metal ions, hence promoting their use in Pharmacology. The present work deals with the synthesis of metal complexes derived from a novel Schiff base drug synthesized from urea and salicylaldehyde and its physico-chemical analysis to find out ligand- metal ratio of this complex in solution. For the structure elucidation of these complexes “Monovariation method (Mole ratio method/ Yoe-Jones Method)” has been used to ascertain the ligand-metal ratio in the complex. The stability constant of the formed complex was calculated by molar conductance measurement using Modified Job’s method (Method of Continuous Variations). The analysis has been carried out using conductometry. To confirm metal-ligand ratio, conductometric titrations were carried out at room temperature using analytical grade metal salts. Titrations were carried out with “systronics conductivity-meter” using dip type conductivity cell having cell constant 1 at room temperature.
Synthesis, Characterization and antimicrobial activity of some novel sulfacet...iosrjce
IOSR Journal of Applied Chemistry (IOSR-JAC) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Synthesis and Crystal Structure of Anickel (II) and Zinc (II) Complex From 1,...IOSRJAC
:The title mononuclear nickel and zinc complexes, Ni(C11H9N4S3)2andZn(C11H9N4S3)2 .2(C3H7NO), were prepared by the reaction of Nickel(II) or Zinc(II)acetate with 1,5-bis[(2- thiophenyl)methylidene]thiocarbonohydrazide in a methanol solution. It features mono-deprotonated bisbidentate ligands, which coordinate to metal (II) ions by hydrazylN and thiocarbony lS atoms, yielding a tetracoordinated metal ions complexes. In Ni(II) complex the geometry around the metal ion is described as square planar. In the Zn(II) the metal atom shows severely tetrahedral distortion from anideal square-planar coordination geometry, as reflected by the dihedral angle between ZnN2and ZnS2 planes of 73.03(13)°. Two intramolecular hydrogen bonds are observed between the solvate dmf molecules and the coordinated ligands:N2—H2N…O1i and N6—H6N…O2 ii in this complex
A detailed study of Transition Metal Complexes of a Schiff base with its Phys...Abhishek Ghara
The many activities of metal ions in biology have stimulated the development of metal based therapeutics. It has been found that biologically active compounds become more effective and bacteriostatic upon chelation with metal ions also the biological activity of many drugs has been shown to be enhanced on complexing with metal ions, hence promoting their use in Pharmacology. The present work deals with the synthesis of metal complexes derived from a novel Schiff base drug synthesized from urea and salicylaldehyde and its physico-chemical analysis to find out ligand- metal ratio of this complex in solution. For the structure elucidation of these complexes “Monovariation method (Mole ratio method/ Yoe-Jones Method)” has been used to ascertain the ligand-metal ratio in the complex. The stability constant of the formed complex was calculated by molar conductance measurement using Modified Job’s method (Method of Continuous Variations). The analysis has been carried out using conductometry. To confirm metal-ligand ratio, conductometric titrations were carried out at room temperature using analytical grade metal salts. Titrations were carried out with “systronics conductivity-meter” using dip type conductivity cell having cell constant 1 at room temperature.
Synthesis, Characterization and antimicrobial activity of some novel sulfacet...iosrjce
IOSR Journal of Applied Chemistry (IOSR-JAC) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Find the best class 10 science sample paper at Studymate that can help students to excel in their board exams. These study materials help students to improve their weaker areas in the aforementioned subject. Visit https://bit.ly/33h4Yxn
Crystal Structure, Topological and Hirshfeld Surface Analysis of a Zn(II) Zwi...Awad Albalwi
Abstract: A mononuclear Zn(II) complex of (Zn(H2L) (CH3OH) Cl2
) (1) has been synthesized by using
a nonlinear optically active Zwitterionic Schiff base which is 4-((2-hydroxy-3-methoxybenzylidene)
amino) benzoic acid (H2L). Complex 1 has been structurally analyzed by FTIR and UV spectroscopy,
TGA, Powder-XRD and single crystal X-ray diffraction. X-Ray crystallographic studies revealed Zn(II)
complex crystallizes in a P21/c space group and exists in a distorted trigonal bipyramidal geometry
(τ = 0.68).
Synthesis and characterization of mixed ligand complexes of some metals with ...Taghreed Al-Noor
This paper presents the synthesis and study of some new mixed-liagnd complexes containing nicotinamide(C6H7N2O) symbolized (NA) and phenylalanine (C9H11NO2)symbolized (pheH)] with some metal ions.
The resulting products were found to be solid crystalline complexes which have been characterized by :Melting points, Solubility, Molar conductivity.
determination the percentage of the metal in the complexes by flame(AAS), magnetic susceptipibility, Spectroscopic Method [FT-IR and UV-Vis].
The proposed structure of the complexes using program , chem office 3D(2006) .
The general formula have been given for the prepared complexes :[M(NA)2(phe)]cl
M(II): Mn(II) ,Co(II) , Ni(II) , Cu(II) , Zn(II) , Cd(II) & Hg(II) .
NA = Nicotinamide= C6H7N2O
Phe - = phenylalanine ion = C9H10NO2
chemistry exemplar class 12 electrochemistry pdfRohit Raj Ranjan
Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction ("redox") reaction
Octahedral rhenium K4[Re6S8(CN)6] and Cu(OH)2cluster modifiedTiO2for the phot...Pawan Kumar
tOctahedral hexacyano rhenium K4[Re6S8(CN)6] cluster complexes were grafted onto photoactive Cu(OH)2cluster modified TiO2{Cu(OH)2/TiO2} support. The rhenium and copper cluster modified TiO2photocata-lyst combines the advantages of heterogeneous catalyst (facile recovery, recycling ability of the catalyst)with the reactivity, selectivity of the soluble molecular catalyst. The synthesized heterogeneous cata-lyst was found to be highly efficient photoredox catalyst for the reduction of CO2under visible lightirradiation. Methanol was found to be the major liquid product with the formation of hydrogen as a byproduct as determined with GC-FID and GC-TCD, respectively. The methanol yield after 24 h irradiationwas found to be 149 mol/0.1 g cat. for Re-cluster@Cu(OH)2/TiO2photocatalyst that is much higher than35 mol/0.1 g cat. for Cu(OH)2/TiO2and 75 mol/0.1 g cat. for equimolar rhenium cluster in the presenceof triethanolamine (TEOA) as a sacrificial donor. The quantum yields (MeOH) of Re-cluster@Cu(OH)2/TiO2and Cu(OH)2/TiO2were found to be 0.018 and 0.004 mol einstein−1, respectively. These values are muchhigher than those reported for other heterogeneous catalysts for six electron transfer reaction
iPositive Academy offers the best NEET Coaching. Score 600+ in NEET entrance exam with training from us. We are the best in NEET UG Coaching Coimbatore http://ipositiveacademy.com/
This ppt has been done for the Academic Writing course. In this presentation , the growth of undoped and glycine doped L-alanine cadmium chloride crystals and results of various studies about the grown crystals were discussed.
Study of characterization of (peo+kclo4) polymer electrolyte systemeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Study of characterization of (peo+kclo4) polymer electrolyte systemeSAT Journals
Abstract Solid state polymer electrolytes have been prepared by using poly (ethylene oxide) (PEO) and KClO4 salt in the Wt% ratios of (90:10), (80:20) and (70:30) by solution – casting technique by using methanol (water-free) as solvent. The complexation of pure PEO with KClO4 salts has been extensively studied using IR studies. In the Differential Scanning Calorimetry (DSC) curves it observed that, pure PEO melting temperature (Tm) slight shift towards lower temperature is due to the addition of KClO4 salt to the polymer. XRD data for these films clearly confirm the complexation between the KClO4 salt and the polymer PEO. The d-values calculated from the X-ray diffraction of pure PEO and various compositions of KClO4 complexed films are clearly indicate the complexation of PEO and KClO4. Keywords: Polymer electrolytes, IR studies, differential scanning calorimetry, X-ray diffraction.
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Find the best class 10 science sample paper at Studymate that can help students to excel in their board exams. These study materials help students to improve their weaker areas in the aforementioned subject. Visit https://bit.ly/33h4Yxn
Crystal Structure, Topological and Hirshfeld Surface Analysis of a Zn(II) Zwi...Awad Albalwi
Abstract: A mononuclear Zn(II) complex of (Zn(H2L) (CH3OH) Cl2
) (1) has been synthesized by using
a nonlinear optically active Zwitterionic Schiff base which is 4-((2-hydroxy-3-methoxybenzylidene)
amino) benzoic acid (H2L). Complex 1 has been structurally analyzed by FTIR and UV spectroscopy,
TGA, Powder-XRD and single crystal X-ray diffraction. X-Ray crystallographic studies revealed Zn(II)
complex crystallizes in a P21/c space group and exists in a distorted trigonal bipyramidal geometry
(τ = 0.68).
Synthesis and characterization of mixed ligand complexes of some metals with ...Taghreed Al-Noor
This paper presents the synthesis and study of some new mixed-liagnd complexes containing nicotinamide(C6H7N2O) symbolized (NA) and phenylalanine (C9H11NO2)symbolized (pheH)] with some metal ions.
The resulting products were found to be solid crystalline complexes which have been characterized by :Melting points, Solubility, Molar conductivity.
determination the percentage of the metal in the complexes by flame(AAS), magnetic susceptipibility, Spectroscopic Method [FT-IR and UV-Vis].
The proposed structure of the complexes using program , chem office 3D(2006) .
The general formula have been given for the prepared complexes :[M(NA)2(phe)]cl
M(II): Mn(II) ,Co(II) , Ni(II) , Cu(II) , Zn(II) , Cd(II) & Hg(II) .
NA = Nicotinamide= C6H7N2O
Phe - = phenylalanine ion = C9H10NO2
chemistry exemplar class 12 electrochemistry pdfRohit Raj Ranjan
Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction ("redox") reaction
Octahedral rhenium K4[Re6S8(CN)6] and Cu(OH)2cluster modifiedTiO2for the phot...Pawan Kumar
tOctahedral hexacyano rhenium K4[Re6S8(CN)6] cluster complexes were grafted onto photoactive Cu(OH)2cluster modified TiO2{Cu(OH)2/TiO2} support. The rhenium and copper cluster modified TiO2photocata-lyst combines the advantages of heterogeneous catalyst (facile recovery, recycling ability of the catalyst)with the reactivity, selectivity of the soluble molecular catalyst. The synthesized heterogeneous cata-lyst was found to be highly efficient photoredox catalyst for the reduction of CO2under visible lightirradiation. Methanol was found to be the major liquid product with the formation of hydrogen as a byproduct as determined with GC-FID and GC-TCD, respectively. The methanol yield after 24 h irradiationwas found to be 149 mol/0.1 g cat. for Re-cluster@Cu(OH)2/TiO2photocatalyst that is much higher than35 mol/0.1 g cat. for Cu(OH)2/TiO2and 75 mol/0.1 g cat. for equimolar rhenium cluster in the presenceof triethanolamine (TEOA) as a sacrificial donor. The quantum yields (MeOH) of Re-cluster@Cu(OH)2/TiO2and Cu(OH)2/TiO2were found to be 0.018 and 0.004 mol einstein−1, respectively. These values are muchhigher than those reported for other heterogeneous catalysts for six electron transfer reaction
iPositive Academy offers the best NEET Coaching. Score 600+ in NEET entrance exam with training from us. We are the best in NEET UG Coaching Coimbatore http://ipositiveacademy.com/
This ppt has been done for the Academic Writing course. In this presentation , the growth of undoped and glycine doped L-alanine cadmium chloride crystals and results of various studies about the grown crystals were discussed.
Study of characterization of (peo+kclo4) polymer electrolyte systemeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Study of characterization of (peo+kclo4) polymer electrolyte systemeSAT Journals
Abstract Solid state polymer electrolytes have been prepared by using poly (ethylene oxide) (PEO) and KClO4 salt in the Wt% ratios of (90:10), (80:20) and (70:30) by solution – casting technique by using methanol (water-free) as solvent. The complexation of pure PEO with KClO4 salts has been extensively studied using IR studies. In the Differential Scanning Calorimetry (DSC) curves it observed that, pure PEO melting temperature (Tm) slight shift towards lower temperature is due to the addition of KClO4 salt to the polymer. XRD data for these films clearly confirm the complexation between the KClO4 salt and the polymer PEO. The d-values calculated from the X-ray diffraction of pure PEO and various compositions of KClO4 complexed films are clearly indicate the complexation of PEO and KClO4. Keywords: Polymer electrolytes, IR studies, differential scanning calorimetry, X-ray diffraction.
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Properties of coordination compoundes part 1 of 3Chris Sonntag
Applications of Crystal Field Theory to explain physical properties of coordination compounds, such as color, lattice energy, hydration energy and Spinel types
Block 3 training exercises.
Draw the Lewis structures for each of the following molecules and determine the electron pair
geometry and the molecular geometry as predicted by the VSEPR.
1) F2
2) N2
3) ICL
4) CO2
5) NH3
6) CF4
7) C2H6
8) C2H4
9) C2H2
10) HCN
11) SO2
12) HNO3 (the hydrogen is bonded to one of the oxygens).
13) CH4O
For each of the following polyatomic ions, draw all resonance structures. Based on the formal
charges identify which is the best resonance structure. (if all resonance structures are equivalent
indicate so next to the structure). Indicate the bond angles as predicted by VSEPR for the best
structure .
14) OH-
15) CN-
16) ClO2 –
17) ClO3 –
18) CO3 2-
19) SO3 2-
20) SCN-
21) HCO2-
22) NO2+
State the hybridization of each of the central atom in each of the following.
23) ClO2 –
24) ClO3 –
25) CO3 2-
26) SO3 2-
27) SCN-
28) HCO2-
29) NO2 -
30) Hydrogen Peroxide (H2O2) is a reactive molecule, often used an antiseptic and sometimes
used for bleaching. Draw a Lewis structure for hydrogen peroxide (peroxide is a
polyatomic ion). What is the oxidation state of the oxygen in hydrogen peroxide?
Suggest a reason for its reactivity.
31) What is the hybridization of the central atom in Acetone CH3COCH3?
32) How many sigma bonds and how many pi bonds are in Acetone?
33) Ozone (O3) is needed in the stratosphere to absorb (and filter out) potentially damaging
ultraviolet light. However, in the lower atmosphere is a dangerous pollutant as it is a very
reactive form of oxygen and as a result, very toxic and destructive. Draw the two
reasonable structures, include formal charges. (Hint: it is not a ring) Suggest a reason for
its high reactivity
34) Which of the following reactions is associated with the lattice energy of Li2O (ΔH°latt)?
A) Li2O(s) → 2 Li⁺(g) + O2⁻(g)
B) 2 Li⁺(aq) + O2⁻(aq) → Li2O(s)
C) 2 Li⁺(g) + O2⁻(g) → Li2O(s)
D) Li2O(s) → 2 Li⁺(aq) + O2⁻(aq)
35). Which of the following reactions is associated with the lattice energy of CaS (ΔH°latt)?
A) Ca(s) + S(s) → CaS(s)
B) CaS(s) → Ca(s) + S(s)
C) Ca2⁺(aq) + S2⁻(aq) → CaS(s)
D) Ca2⁺(g) + S2⁻(g) → CaS(s)
E) CaS(s) → Ca2⁺(aq) + S2⁻(aq)
36). Which of the following reactions is associated with the lattice energy of RbI (ΔH°latt)?
A) Rb(s) +
2
1
I2(g) → RbI(s)
B) RbI(s) → Rb⁺(g) + I⁻(g)
C) RbI(s) → Rb(s) +
2
1
I2(g)
D) RbI(s) → Rb⁺(aq) + I⁻(aq)
E) Rb⁺(g) + I⁻(g) → RbI(s)
37). Which of the following NaCl, KCl, LiCl, CsCl has the highest magnitude of lattice energy?
38). Identify the compound with the lowest magnitude of lattice energy among the following:
KCl, KBr,SrO,CaO.
39). Identify the shortest bond.
A) single covalent bond
B) double covalent bond
C) triple covalent bond
D) all of the above bonds are the same length
40 ...
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Crash-Course for AIPMT & Other Medical Exams 2016(Essentials heart)APEX INSTITUTE
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Crash-Course for AIPMT & Other Medical Exams 2016Target pmt (2)APEX INSTITUTE
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Crash-Course for AIPMT & Other Medical Exams 2016 (Essentials cockroach)APEX INSTITUTE
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
I.S.C. Class XII MATHEMATICS Sample Papers 2016APEX INSTITUTE
Dear Students/Parents We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center. We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching. Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears. We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth. Committed to excellence... With best wishes. S . Iqbal ( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
APEX INSTITUTE has been established with sincere and positive resolve to do something rewarding for ENGG. / PRE-MEDICAL aspirants. For this the APEX INSTITUTE has been instituted to provide a relentlessly motivating and competitive atmosphere.
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
APEX INSTITUTE has been established with sincere and positive resolve to do something rewarding for ENGG. / PRE-MEDICAL aspirants. For this the APEX INSTITUTE has been instituted to provide a relentlessly motivating and competitive atmosphere.
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
APEX INSTITUTE has been established with sincere and positive resolve to do something rewarding for ENGG. / PRE-MEDICAL aspirants. For this the APEX INSTITUTE has been instituted to provide a relentlessly motivating and competitive atmosphere.
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
Dear Students/Parents
APEX INSTITUTE has been established with sincere and positive resolve to do something rewarding for ENGG. / PRE-MEDICAL aspirants. For this the APEX INSTITUTE has been instituted to provide a relentlessly motivating and competitive atmosphere.
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
APEX INSTITUTE was conceptualized in May 2008, keeping in view the dreams of young students by the vision & toil of Er. Shahid Iqbal. We had a very humble beginning as an institute for IIT-JEE / Medical, with a vision to provide an ideal launch pad for serious JEE students . We actually started to make a difference in the way students think and approach problems.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
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Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
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The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
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Important question for iit jee(chemistry)
1. IMPORTANT QUESTION
IIT JEE - NEET
1) Which of the following order is correct for the first ionization
energies of their elements?
(EAMCET 2009)
1) B < Be < N < O
2) Be < B < N < O
3) B < Be < O < N
4) B < O < Be < N
2) The first ionization potential of four consecutive elements,
present in the second period of the periodic table are 8.3, 11.3,
14.5 and 13.6 eV respectively. Which one of the following is the
first ionization potential (in eV) of nitrogen?
(Eamcet - 2004-M)
1) 13.6
2) 11.3
3) 8.3
4) 14.5
3) The electron configuration of elements A, B and C are [He]2s1,
[Ne]3s1 and [Ar]4s1 respectively. Which one of the following order
is correct for the first ionization potentials (in kJ mol–1) of A, B and
C?
(Eamcet - 2001-E)
1) A > B > C
2) C > B > A
3) B > C >A
4) C > A > C
4) The correct order of second ionization energies of C, N, O and F
is:
(IIT JEE 1991)
1) C > N > O > F
2) O > N > F > C
3) O > F > N > C
4) F > O > N > C
5)The incorrect statement among the following is:
(IIT JEE 1997)
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2. IMPORTANT QUESTION
1) The first ionization potential of Al is less than the first ionization
potential of Mg.
2) The second ionization potential of Mg is greater than the second
ionization potential Na.
3) The first ionization potential of Na is less than the first ionization
potential of Mg.
4) The third ionization potential of Mg is greater than that of Al.
6) The first ionization potentials of Na, Mg, Al and Si are in the
order:
(IIT JEE 1988)
1) Na < Mg > Al < Si
2) Na < Mg < Al > Si
3) Na > Mg > Al > Si
4) Na > Mg > Al < Si
7) The first ionization energy in electron volts of nitrogen and
oxygen atom's are respectively given by:
(IIT JEE 1987)
a) 14.6, 13.6
b) 13.6, 14.6
c) 13.6, 13.6
d) 14.6, 14.6
8) Which of the following species has the highest ionization
potential?
(EAMCET 1998-E)
+
1) Li
2) Mg+
3) Al+
4) Ne
9) The set representing correct order of first ionization potential is:
(IIT JEE 2001)
1) K > Na > Li
2) Be > Mg > Ca
3) B > C > N
4) Ge > Si > C
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3. IMPORTANT QUESTION
10)
Amongst
the
following
elements
(whose
electronic
configurations are given below), the one having the highest
ionization energy is:
(IIT JEE 1990)
a) [Ne] 3s2 3p1
b) [Ar] 3d10 4s2 4p2
c) [Ne] 3s2 3p2
d) [Ne] 3s2 3p3
11) The increasing order of the first ionization enthalpies of the
elements B, P, S and F (lowest first) is:
(AIEEE 2006)
a) F < S < P < B
b) P < S < B < F
c) B < P < S < F
d) B < S < P < F
TYPES OF CHEMICAL BONDS
IIT JEE - NEET
1) The types of bonds present in CuSO4.5H2O are only:
(IIT JEE 1983)
1) electrovalent and covalent
2) electrovalent and coordinate covalent
3) electrovalent, covalent and coordinate covalent
4) covalent and coordinate covalent
2) Which of the following contains both polar and non-polar
bonds?
(IIT JEE 1997)
1) NH4Cl
2) HCN
3) H2O2
4) CH4
3) The number and type of bonds between two carbon atoms in
CaC2 are:
(IIT JEE 1996)
1) one σ and one π bonds
2) one σ and two π bonds
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4. IMPORTANT QUESTION
3) one σ and one and half π bonds
4) one σ bond
4) Which one of the following molecule contains both ionic and
covalent bonds?
(EAMCET 2002-E)
1) CH2Cl2
2) K2SO4
3) BeCl2
4) SO2
5) Element 'X' is strongly electropositive and element 'Y' is
strongly
electronegative.
Both
are
univalent.
The
compound
formed will be:
(IIT JEE 1980)
1) X+Y2) Y+X3) X-Y
4) X→Y
6) The bond between two identical non metal atoms has a pair of
electrons. The correct statement about this pair is:
(IIT JEE 1986)
1) Unequally shared between the two.
2) Transferred fully from one atom to another
3) Has identical spins.
4) Equally shared between the atoms.
7) The bonds present in N2O5 are:
(IIT JEE 1986)
1) only ionic
2) covalent and coordinate
3) only covalent
4) covalent and ionic
THERMODYNAMICS MCQ
IIT JEE
1) Among the following the state function (s) is (are):
(IIT JEE 2009)
1) Internal energy
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5. IMPORTANT QUESTION
2) Reversible expansion work
3) Irreversible expansion work
4) Molar enthalpy
2) Which of the following statements is false?
(IIT JEE 2001)
1) Work is a state function.
2) Work appears at the boundary of the system.
3) Temperature is a state function.
4) Change in the state is completely defined when the initial and final
states are specified.
ELECTROLYTIC CELLS MCQ
IIT JEE
1) A dilute aqueous solution of Na2SO4 is electrolyzed using
platinum electrodes the product at the anode and cathode,
respectively, are:
(IIT JEE 1996)
a) O2 and H2
b) S2O82-, Na
c) O2, Na
d) S2O82-, H2
2) Which of the following statement is correct for electrolytic cell?
(IIT JEE 2003)
1) Electrons flow from cathode to anode through the external battery.
2) Electrons flow from cathode to anode within the electrolytic solution.
3) Migration of ions along with oxidation reaction at anode and
reduction reaction at cathode.
4) Migration of ions along with oxidation reaction at cathode and
reduction reaction at anode.
3) Of the following, the metal that cannot be obtained by
electrolysis of aqueous solution of their salts are:
(IIT JEE 1990)
a) Cr
b) Al
c) Cu
d) Mg
62, Nitikhand-3 Indirapuram, Gzb. Call us +91-9910817866 +91-9990495952 , 9310122993|
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6. IMPORTANT QUESTION
e) Ag
STOICHIOMETRY OF CRYSTALS
IIT JEE - NEET
1) In a solid 'AB' having NaCl structure, 'A' atoms occupy the
corners of cubic unit cell. If all the face centered atoms along one
of
the
axes
are
removed
then
the
resultant
stoichiometry
(composition) of the solid is:
(IIT JEE 2001)
1) A4B3
2) AB2
3) A2B
4) A3B4
2) A substance AxBy crystallizes in a face centered cubic (FCC)
lattice in which ‘A’ atoms occupy each corner of the cube and ‘B’
atoms occupy the centers of each face of the cube. Identify the
correct composition of the substance AxBy.
(IIT JEE 2002)
A) AB3
B) A4B3
C) A3B
D) Composition cannot be specified.
3) A solid has a structure in which ‘W’ atoms are located at the
corners of a cubic lattice, ‘O’ atoms are at the center of face edges
and Na atoms are at the center of the cube. The formula of the
compound is:
(KURUKSHETRA CEET 1996)
a) Na2WO3
b) Na2WO2
c) NaWO2
d) NaWO3
MOLE FRACTION - PERCENT COMPOSITION
IIT JEE - AIEEE
1) Two solutions of a substance (non electrolyte) are mixed in the
following manner. 480 mL of 1.5 M first solution + 520 mL of 1.2 M
second solution. What is the molarity of the final mixture?
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7. IMPORTANT QUESTION
(AIEEE 2005 - equivalent to IIT JEE MAIN)
1) 1.20 M
2) 1.344 M
3) 1.50 M
4) 2.70 M
2) The density (in g mL–1) of a 3.60 M sulphuric acid solution that
is 29% H2SO4 (Molar mass = 98 g mol–1) by mass will be:
(AIEEE 2007)
1) 1.45
2) 1.64
3) 1.88
4) 1.22
3) 25 mL of a solution of barium hydroxide on titration with 0.1
molar solution of hydrochloric acid gave titer value of 35 mL. The
molarity of barium hydroxide solution was :
(AIEEE 2003)
1) 0.07
2) 0.14
3) 0.28
4) 0.35
4) The density of a solution prepared by dissolving 120 g of urea
(mol.mass = 60 u) in 1000 g of water is 1.15 g/mL. The molarity of
this solution is:
(AIEEE 2012)
1) 1.02 M
2) 2.05 M
3) 0.50 M
4) 1.78 M
5) Density of a 2.05 M solution of acetic acid in water is 1.02 g/mL.
The molality of the solution is:
(AIEEE 2006)
1) 1.14 mol kg
-1
2) 3.28 mol kg-1
3) 2.28 mol kg-1
4) 0.44 mol kg-1
62, Nitikhand-3 Indirapuram, Gzb. Call us +91-9910817866 +91-9990495952 , 9310122993|
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8. IMPORTANT QUESTION
6) With increase in temperature, which of these changes?
(AIEEE 2002)
1) molality
2) fraction of solute present in water
3) weight fraction of solute
4) mole fraction
7) A 5.2 molal aqueous solution of methyl alcohol, CH3OH is
supplied. What is the mole fraction of methyl alcohol in the
solution?
(AIEEE 2011)
(1) 0.050
(2) 1.100
(3) 0.190
(4) 0.086
s-BLOCK - ALKALI METALS MCQ
IIT JEE
1) Molecular formula of Glauber's salt is:
(IIT JEE 1985)
a) MgSO4.7H2O
b) FeSO4.7H2O
c) CuSO4.5H2O
d) Na2SO4.10H2O
2) Which one of the following orders presents the correct sequence
of the increasing basic nature of the given oxides?
(AIEEE 2011)
1) K2O < Na2O < Al2O3 < MgO
2) Al2O3 < MgO < Na2O < K2O
3) MgO < K2O < Al2O3 < Na2O
4) MgO < K2O < Na2O < Al2O3
3) The correct order of stability for the following super oxides is:
(EAMCET 2008 MEDICAL)
1) KO2 > RbO2 > CsO2
2) RbO2 > CsO2 > KO2
3) CsO2 > RbO2 > KO2
4) KO2 > CsO2 > RbO2
62, Nitikhand-3 Indirapuram, Gzb. Call us +91-9910817866 +91-9990495952 , 9310122993|
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9. IMPORTANT QUESTION
4) The correct order of stability for the following super oxides is:
(EAMCET 1995 MEDICAL)
1) Na2O
2) Na2O2
3) K2O
4) KO2
5) The chemical formula of feldspar is:
(EAMCET 2007 ENGINEERING)
1) KAlSi3O8
2) Na3AlF6
3) NaAlO2
4) K2SO4.Al2(SO4)3.4Al(OH)3
6)
What
are
the
products
formed
when
Li2CO3 undergoes
decomposition?
(EAMCET 2002 MEDICAL)
1) Li2O2, CO
2) Li2O, CO
3) Li2O,CO2
4) LiO2, CO
7) Among the alkali metals, the metal with the highest ionization
potential is:
(EAMCET 1991 ENGINEERING)
1) Na
2) Li
3) Rb
4) Cs
8) Alkali metals are:
(EAMCET 1985 ENGINEERING)
1) Oxidising agents
2) dehydrating agents
3) reducing agents
4) All the above
d-BLOCK - OXIDATION STATES MCQ
IIT JEE
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10. IMPORTANT QUESTION
1) Amongst the following, identify the species with an atom in
oxidation state +6.
(IIT JEE 2000)
a) MnO4b) Cr(CN)63c) NiF62d) CrO2Cl2
2)
The
maximum
oxidation
states
shown
by
Ru
and
Os,
respectively, are:
(AdiChemistry)
a) +8 and +8
b) +8 and +6
c) +6 and +8
d) +6 and +6
3) The complex ion which has no d-electron in the central metal
ion is:
(IIT JEE 2000)
a) [MnO4]b) [Co(NH3)6]3+
c) [Fe(CN)6]3d) [Cr(H2O)6]3+
4) The pair of compounds having metals in their highest oxidation
state is:
(IIT JEE 2004)
a) MnO2, FeCl3
b) [MnO4]-, CrO2Cl2
c) [Fe(CN)6]3-, [Co(CN)3]
d) [NiCl4]2-, [CoCl4]PARAMAGNETIC & DIAMAGNETIC NATURE OF COORDINATION COMPOUNDS
MCQ
IIT JEE
1) Amongst Ni(CO)4, [Ni(CN)4]2- and NiCl42-:
(IIT JEE 1991)
a)
Ni(CO)4 and NiCl42- are
diamagnetic;
and
[Ni(CN)4]
paramagnetic.
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2-
is
11. IMPORTANT QUESTION
b)
[Ni(CN)4]2- and NiCl42- are
diamagnetic;
and
Ni(CO)4 is
paramagnetic.
c)
Ni(CO)4 and
[Ni(CN)4]2- are
diamagnetic;
and
NiCl42- is
paramagnetic.
d) Ni(CO)4 is diamagnetic; [Ni(CN)4]2- and NiCl42- are paramagnetic.
2) Among the following the lowest degree of paramagnetism per
mole of the compound at 298 K will be shown by:
(IIT JEE 1988)
a) MnSO4.4H2O
b) CuSO4.5H2O
c) FeSO4.6H2O
d) NiSO4.6H2O
3)
Among
the
following
ions
which
one
has
the
highest
paramagnetism?
(IIT JEE 1993)
a) [Cr(H2O)6]3+
b) [Fe(H2O)6]2+
c) [Cu(H2O)6]2+
d) [Zn(H2O)6]2+
ISOMERISM IN ORGANIC COMPOUNDS - MCQ
IIT JEE
1) Which of the following compounds will exhibit cis-trans
isomerism?
(IIT JEE 1983)
a) 2-butene
b) 2-butyne
c) 2-butanol
d) butanal
2) The number of isomers of C6H14 is:
(IIT JEE 1987)
a) 4
b) 5
c) 6
d) 7
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12. IMPORTANT QUESTION
3) The isomers which can be inter converted through rotation
around a single bond are:
(IIT JEE 1992)
a) conformers
b) diastereomers
c) enantiomers
d) positional isomers
4) An isomer of ethanol is:
(IIT JEE 1986)
a) methanol
b) diethyl ether
c) acetone
d) dimethyl ether
5) How many optically active stereoisomers are possible for
butane-2,3-diol?
(IIT JEE 1997)
a) 1
b) 2
c) 3
d) 4
AROMATIC NATURE OF BENZENE - MCQ
IIT JEE
1) An aromatic molecule will :
(IIT JEE 1999)
a) have 4nπ electrons
b) have (4n+2)π electrons
c) be planar
d) be cyclic
2) Give reasons for: "although benzene is highly unsaturated,
normally it does not undergo addition reaction".
(IIT JEE 1983)
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