This document contains a chemistry exam with 80 multiple choice questions covering various topics like orbital diagrams, hybridization, stoichiometry, conductivity, acidity, gas laws, oxidation states, partial pressures, isomerism, dipole moments, spectrochemical series, electrode potentials, kinetics, and organic reactions. The questions test understanding of fundamental chemistry concepts as well as the ability to analyze chemical reactions and problems.

1. CHEMISTRY
41. The orbital diagram in which Aufbau principle is violated is
(a) (b)
(c) (d)
42. A square planar complex is formed by hybridisation of which atomic orbitals?
(a) s, px, py, pz (b) s, px, py, 2 2 y
d
x
(c) s, px, py, 2
z d (d) s, px, pz, dxy
43. If 0.5 mol of BaCl2 is mixed with 0.20 mol of Na3PO4, the maximum amount of Ba3(PO4)2
that can be formed is
(a) 0.70 mol (b) 0.50 mol
(c) 0.20 mol (d) 0.1 mol
44. Conductivity (Unit: siemen’s S) is directly proportional to the area of the vessel and the
concentration of the solution in it and is inversely proportional to the length of the vessel. The
unit of constant of proportionality is
(a) S m mol 1 (b) S m2 mol 1 (c) S 2 m2 mol (d) S2 m2 mol 2
45. The correct order of increasing ease of protonation is
NHCH3
(I) (II) (III) (IV)
NO2 OMe
CH3CONH NH2 NH2
(a) (II) < (III) < (IV) < (I) (b) (II) < (IV) < (III) < (I)
(c) (II) < (III) < (I) < (IV) (d) (II) < (I) < (III) < (IV)
46. One mol of K2Cr2O7 oxidises the following number of moles of FeSO4 in acidic medium
(a) 1 (b) 3
(c) 5 (d) 6
47. Which of the following species contain unpaired electron?
(a) KO2 (b) 2 AlO
(c) 2 NO (d) BaO2
48. Which expression represents correct variation of density of ideal gas with temperature?
(a) d2 = d1 (T2/T1) (b) d2 = d1 (T1/T2)
(c) d2 = d1 (p2T1/p1T2) (d) d2 = d1 (p2T2/p1T1)
49. Given that H°ionisation of HX and HY as 45 and 20 kJ mol 1 respectively, then which of the
following relation is correct?
(a) pKa (HX) = pKa (HY) (b) pKa (HX) > pKa (HY)

2. (c) pKa (HX) < pKa (HY) (d) pKa (HX) = pKa (HY) +
20
45
log
50. One mole of N2H4 loses 10 mole of electrons to form a new compound Y. Assuming that
all nitrogen appears in the new compound, what is the oxidation number of nitrogen in Y
(There is no change in the oxidation state of hydrogen)?
(a) 3 (b) +3
(c) +5 (d) +1
51. 0.5 mole of each of H2, SO2 and CH4 are kept in a container. A hole was made in the
container. After 3 hours, the order of partial pressures in the container will be
(a)
SO2 P >
CH4 P >
H2 P (b)
H2 P >
SO2 P >
CH4 P
(c)
CH4 P >
SO2 P >
H2 P (d)
CH4 P >
H2 P >
SO2 P
52. On bromination propionic acid yields two isomeric 2 bromopropionic acids. This pair will be
an example of
(a) optical isomers. (b) cis trans isomers.
(c) chain isomers. (d) position isomers.
53. Which of the following set represents increasing dipole moment of?
(I) Chlorobenzene (II) m dichlorobenzene
(III) o dichlorobenzene (IV) p dichlorobenzene
(a) (I) < (IV) < (II) < (III) (b) (IV) < (I) < (II) < (III)
(c) (IV) < (I) < (III) < (II) (d) (IV) < (II) < (I) < (III)
54. Which is the correct order of acidic strength of the following acids?
(a) CH3CH2COOH > CH2=CH COOH > CH C COOH
(b) CH3CH2COOH < CH2=CH COOH < CH C COOH
(c) CH3CH2COOH < CH2=CH COOH > CH C COOH
(d) CH3CH2COOH > CH2=CHCOOH < CH C COOH
55. The standard electrode potential (E°) for OCl /Cl and Cl /
2
1
Cl2 respectively are 0.94 V and
1.36 V. The E° value of OCl /
2
1
Cl2 will be
(a) 0.42 V (b) 2.20 V
(c) 0.52 V (d) 1.04 V
56. For a reaction,
SO2(g) + O (g)
2
1
2 SO3(g) if Kp = 1.7 × 1012 at 20°C and 1 atm pressure then value
of Kc is
(a) 1.7 × 1012 (b) 0.7 × 1012
(c) 8.31 × 1012 (d) 1.2 × 1012
57. In the spectrochemical series which ligand produces strong field?

3. (a) Cl (b) H2O
(c) NO2 (d) CO
58. Which of the following is used for dry bleaching?
(a) Chlorine (b) SO2
(c) Ozone (d) H2O2
59. Out of the following, the metals that cannot be obtained by the electrolysis of the aqueous
solution of their salts are
(a) Ag (b) Mg
(c) Cu (d) Al
60. Plot of log (a x) vs time t is a straight line. This indicates that the reaction is of
(a) second order (b) first order
(c) zero order (d) third order
61. The enthalpy of formation of SO2(g) is 296.7 kJ. The energy required for the decomposition
of 2 mole of SO2(g) into sulphur(rhombic) and gaseous O2 is
(a) 148.35 kJ (b) 296.7 kJ
(c) 593.4 kJ (d) 148.35 kJ
62. At room temperature HCl is a gas while HF is a low boiling liquid. This is because
(a) H F bond is covalent (b) H F bond is ionic.
(c) H F has metallic bond. (d) H F has hydrogen bond.
63. The helical structure of proteins is stabilized by
(a) Peptide bonds (b) Dipeptide bond
(c) Hydrogen bond (d) vander Waals forces
64. The ratio between the r.m.s velocity of H2 at 50 K and that of O2 at 800 K is
(a) 4 (b) 2
(c) 1 (d) 1/4
65. An organic compound ‘X’ is boiled with KOH when it evolves a gas, which gives white
precipitate with MgSO4 solution. The compound ‘X’ also gives salicyclic acid on warming
with phenol. ‘X’ is likely to be
(a) C6H5Cl (b) CCl4
(c) CHCl3 (d) C6H5OH
66. In which of the following Cl is not easily replaced?
(a) CH3CH2Cl (b) Picryl chloride
(c) Vinyl chloride (d) Allyl chloride
67. 2 moles of acetaldehyde are warmed in the presence of 10% Ba(OH)2 to give a product which
dehydrates to a compound ‘X’. The compound on reduction with NaBH4 will give
(a) CH3CH=CHCHO (b) CH3CH=CHCH2OH
(c) CH3CH2CH2CH2OH (d) CH3CHCH2CH2OH
OH
68. Benzene ICl AlCl3 A
‘A’ is:

4. (a)
Cl
(b)
I
(c)
I
Cl
(d)
I
C l
69. Length of a unit cell edge of the bcc lattice metal is 200 nm. Then the radius of the atom of
the metal is
(a) 89.1 nm (b) 86.6 nm
(c) 78.3 nm (d) 98.3 nm
70. Which of the following monomers can undergo free radical, cationic as well as anionic
polymerisation with equal ease?
(a) CH3–C=CH2
CH3
(b) C6H5–CH=CH2
(c) CH2=CH–CN (d) CH2=CH2
71. The bond energy of an O H bond is 109 kcal mol 1. When a mole of water is formed from
H and O atoms, then
(a) 218 kcal is released. (b) 109 kcal is released.
(c) 218 kcal is absorbed. (d) 109 kcal is absorbed.
72. A solution of Na2SO4 in water is electrolysed using inert electrodes. The product at cathode
and anode are respectively
(a) H2, O2 (b) O2, H2
(c) O2, Na (d) O2, SO2
73. For the hypothetical reaction, A + B C + D, the rate = k[A]–1/2[B]3/2. On doubling the
concentration of A and B, the rate will be (assume that concentration of A and B initially were
same)
(a) 4 times (b) 2 times
(c) 3 times (d) none of these
74. Which of the following substance gives a positively charged sol?
(a) Gold (b) Arsenious sulphide
(c) Starch (d) Ferric hydroxide
75. The correct order of first ionization potential of the element is:
(a) Na > Mg > Al (b) Mg > Na > Al
(c) Al > Mg > Na (d) Mg > Al > Na
76. For the reaction, C H OH HX C H X 2 5
ZnX
2 5
2 . The decreasing order of reactivity of
halogen acids is :
(a) HI > HCl > HBr (b) HI > HBr > HCl
(c) HCl > HBr > HI (d) HBr > HI > HCl
77. CH CHO X
Oxidation
SeO
3
2 . The product X of the reaction is:
(a) CO2 + H2O (b) OHC–CHO
(c) (COOH)2 (d) (CH3)2CO
78. When phenolic ether is heated with HI, it yields
(a) alkyl halide + phenol (b) alcohol + aryl halides

5. (c) alkyl halide + aryl halide + H2O (d) aryl halide only
79. Isopropyl amine
HO3 KMnO4[X] [Y]. In the above sequence [X] and [Y] are respectively
(a) Acetaldimine, Ethanal (b) Ethanal, ketimine
(c) Ketimine, acetone (d) Acetone, propan-2-ol
80. Which of the following is a pseudohalogen?
(a) IF7 (b) (CN)2
(c) ICl2 (d) 3 I