2. SECTION – I Single Correct Answer Type There are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate
3. 01 Problem The triad of nuclei that is isotonic is a. b. c. d.
4. Problem 02 The wavelength of a spectral line for an electronic transition is inversely related to the number of electrons undergoing the transition the nuclear charge of the atom the difference in the energy of the energy levels involved in the transition the velocity of the electron undergoing the transition
5. Problem 03 The orbital diagram in which the aufbau principle is violated is a b c d
6. Problem 04 The outermost electronic configuration of the most electronegative element is ns2np3 ns2np4 ns2np5 ns2np6
7. Problem 05 The first ionization potential of NA, Mg Al and Si are in the order Na<Mg>Al<Si Na>Mg>Al>Si Na<Mg<Al>Si Na>Mg>Al<Si
8. Problem 06 The species in which the central atom uses hybrid orbital's in its bonding is PH3 NH3 CH3+ SbH3
9. Problem 07 In a certain code. 95789 is written as EGKPT & 2436 is written as ALUR. How is 23549 written in that code. ALEUT ALGTU ALGUT ALGRT
10. 08 Problem The molecule that has linear structure is CO2 NO2 SO2 SiO2
11. Problem 09 The angle in 1,1,2,2-terachloroethene and terra chloromethane respectively will be about a. b. c. d.
12. Problem 10 The equaling weight of MnSO4 is half its molecular weight when it is converted to Mn2O3 MnO2 MnO4- d.
13. Problem 11 In the Vander Waals equation of state for non-ideal gas the term that accounts for intermolecular forces is a. b. RT c. d. (RT) -1
14. 12 Problem A bottle of dry ammonia and bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends ,the white ammonium chloride ring first formed will be at the centre of the tube near the hydrogen chloride bottle near the ammonia bottle throughout the length of the tube
15. Problem 13 In which mode of expression does the concentration of a solution remain independent of temperature? Molarities Normality Formality Modality
16. Problem 14 When equal volumes of the following solutions are mixed precipitation of will occur only with a. b. c. d.
17. Problem 15 The pKQ of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2-3 and the pH in the small intestine is about 8. Aspirin will be unionized in the small intestine and in the stomach completely ionized in the small intestine and in the stomach ionized in the stomach and almost unionized in the small intestine ionized in the small intestine and almost unionized in the stomach
18. Problem 16 The standard reduction potentials, ,for the half reactions are as The emf for the cell reaction is -0.35 V +0.35V +1.17V -1.17V
19. 17 Problem In , the bond that undergoes heterolysis cleavage most readily is C-C C-O C-H O-H
20. Problem 18 Phenol reacts with bromine in carbon disulphide at low temperature to give m-bromophenol o-and p-bromophenols p-bromophenol 2,4,6- tribromophenol
21. Problem 19 The number of structural and configurationally isomers of a bromo compound, C5H9Br formed by the addition of HBr to 2-pentyne respectively are 1 and 2 2 and 4 4 and 2 2 and 1
22. Problem 20 Among the following ,the lowest degree of par magnetism per mole of the compound at 298 K will be shown by a. b. c. d.
23. SECTION – II Multiple Answer type Among the four answer given for each sub question, one or more is correct.
24. Problem 01 Potassium manganese is formed when Chlorine is passed into an aqueous solution manganese dioxide is fused with potassium hydroxide in air formaldehyde reacts with potassium permanganate in presence of a strong alkali potassium permanganate reacts with Conc.sulphuric acid
26. Problem 03 The rate law for the reaction os given by Rate= .The rate of the reaction will be double on doubling the concentration of sodium hydroxide halved on reducing the concentration of alkyl halide to one half increased on increasing the temperature of the reaction unaffected by increasing the temperature of the reaction
27. Problem 04 Nuclear reactions accompanied by emission of neutron (s) are a. b. c. d.
28. Problem 05 The statements that are true for the long form of the periodic table are: It reflects the sequence of filling the electrons in the order of sub-energy levels s,p,d and f. It helps predict the stable valiancy states of the elements It reflects trends in physical and chemical properties of the elements. It helps predict the relative ionicity of the bond between any two elements.
29. SECTION – III Fill in the blanks Choosing appropriate words given within brackets against each statement
30. Problem 01 The uncertainty principle and the concept of wave nature of matter were proposed by ____________ , and _____________ respectively. (Heisenberg ,Schrodinger, Maxwell, de Broglie)
31. Problem 02 In extractive metallurgy of zinc, partial fusion of ZnO with coke is called _______ and reduction of the ore to the molten metal is called _________. (smelting, calcining, roasting sintering)
32. Problem 03 Isomers which are _________ mirror images are known as. ( super imposable, non-superimposable, enantiomers, diastructural, espiers.)
33. Problem 04 The salts _______ and __________ are is structural. (FeSO4-7H2O; CuSO4-5H2O; MnSO4-4H2O;ZnSO4-7H2O)
42. Problem 04 benzene, toluene, methoxybenzene, chlorbenzene in increasing order of reactivity towards sulphonation with fuming sulphuric acid.
43. Problem 05 in the order of increasing acidic character.
44. Problem 06 methylamine, dimethylamine , aniline, N-methylaniline in increase order of base strength.
45. SECTION – VI In each sub question Below a statement (S) is given which may be correct or wrong. For each statement an explanation (E) is given which may be correct or wrong. Choose the correct answer from the code a,b,c,d given for each sub question
46. Problem 01 Statement (S):If a strong acid is added to a solution of potassoium chromate it changes its colour from yellow to orange. Explanation (E):The colour change is due to the oxidation of potassium chromate. Code: Both (S) and (E) are correct and (E) is the correct explanation of (S) Both (S) and (E) are correct but (E) is not the correct explanation of (S) (S) is correct but (E) is wrong. (S) is wrong but (E) is correct.
47. Problem 02 Statement (S) :Solubility of n-alcohols in water decreases with increase in water decreases with increase in molecular weight. Explanation (E): The relative proportion of the hydrocarbon part in alcohols increases with increasing molecular weight which permits enhanced hydrogen bonding with water. Code: Both (S) and (E) are correct and (E) is correct explanation of (S) Both (S) and (E) are correct but (E) is not the correct explanation of (S) (S) is correct but (E) is wrong (S) is wrong but (E) is correct.
