2. SECTION – I Single Correct Answer Type For each sub-question given below, four answers are given of which only one is correct. Write down the correct answer in the answer book as illustrated in the following example
3. 01 Problem The molecule which has zero dipole moment is, a.CH2Cl2 b. BF3 c. NF3 d.ClO2
4. Problem 02 Which of the following is paranmagnetic ? a.O2 b. CN c.CO d. NO+
5. Problem 03 The correct ground state electronic configuration of chromium atom is: a. b. c. d.
6. Problem 04 The molecule which had pyramidal shape is: a. b. c. d.
7. Problem 05 The Compound in which C uses its hybrid orbitals for bond formation is: a. b. c. d.
8. Problem 06 The compound in which has one isopropyl group is: 2,2,3,3- tetramethylpentane 2,2- dimethylpentane 2,2,3-trimethylpentane 2-methylpentane
9. Problem 07 Which one of the following is the strongest base? a.AsH3 b.NH3 c.PH3 d.SbH3
10. 08 Problem The C-H bond distance is the longest in: a.C2H2 b.C2H4 c.C2H6 d.C2H2Br2
11. Problem 09 Which one of the following is the smallest in size? a.N3- b.O2- c. F- d. Na+
12. Problem 10 The correct set of quantum numbers for the unpaired electron of chlorine atom is: N l m 2 1 0 2 1 1 3 1 1 3 0 0
13. Problem 11 Which one of the following is the strongest acid ? a. ClO3(OH) b. ClO2(OH) c. SO(OH)2 d. SO2(OH)2
14. 12 Problem The number of sigma and pi bonds in 1-butene-3-yne are: 5 sigma and 5 pi 7 sigma and 3 pi 8 sigma and 2 pi 6 sigma and 4 pi
15. Problem 13 Which of the following 0.1 M aqueous solutions will have the lowest freezing point? Potassium sulphate Sodium chloride Urea Glucose
16. Problem 14 The compound which gives the most stable carboniumion on dehydration is: a. b. c. d.
17. Problem 15 The value of the van der Waals constant a for gases and are 1.360, 1.390, 4.170 and 2.253 and atm respectively. The gas which can most easily be liquefied is: a.O2 b. N2 c.NH3 d.CH4
18. SECTION – II Multiple Correct Answer Type Amongst the four answers given for each sub question ,one or more ore the correct answers.
19. Problem 01 Nitrogen (I) oxide is produced by : thermal decomposition of ammonium nirtate disproportioation of thermal decomposition of ammonium nitrite interraction of hydroxylamine and nitrous acid
20. 02 Problem Which of the following have asymmetric carbon atom? a. b. c. d.
21. Problem 03 Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because: the hydration energy of sodium sulphate is more than its lattice energy the lattice energy of barium sulphate is more than its hydration energy the lattice energy has no role to play in solubility the hydration energy of sodium sulphate is less than its lattice energy.
22. Problem 04 The equilibrium is attained at in a closed container and an inert gas, helium is introduced. Which of the following statements are correct? Concentrations of SO2,Cl2and SO2Cl2 Change More chlorine is formed Concentration of SO2 is reduced More SO2Cl2 is formed.
23. Problem 05 Which of the following are examples of aldol condensation? a. b. c. d.
27. Problem 03 Formation of phenol from chlorobenzene is an example of ________ aromatic substitution.
28. Problem 04 A radioactive nucleus decays emitting one alpha and two beta particles: the daughter nucleus is __________ of the parent.
29. Problem 05 Eight grams each of oxygen and hydrogen at will have the total kinetic energy in the ratio of ________ .
30. SECTION – VI Match the following Each entry in column X is in some way related to the entries in columns Y and Z. Match the appropriate entries
31. Problem 01 X Y Z Mica ----- Layer structure ----------- Insulator Superphosphate -------- Bone ash ------------ Fertilizer. Carbon fibres --------- Graphite ------------ Reinforced plastics Rock salt --------------- Cubic ----------- Preservative Carborundum ---------------- Diamond structure ---------- Abrasive
32. SECTION – VI True or false State whether the following statements are true or false. If false, give the correct statement.(Simple negation of the statement does not carry any credit.)
34. Problem 02 Both potassium ferrocyanide and potassium ferricyanide are diamagnetic.
35. Problem 03 The reaction of vinyl chloride with hydrogen iodide to give 1-chloro-1-iodoethane is an example of anti-Markownikov’s rule. The catalyst does not affect the energy of activation in a chemical reaction.
36. Problem 01 Assertion Statement For each ten degree rise of temperature Energy-wise distribution of the rate constant is nearly doubled. molecules in a gas is an exponential function of temperature.
37. Problem 02 Assertion Statement p-Nitophenol is a stronger Intramolecular hydrogen bonidings acid than o-nitrophenol. makes the o-isomer weaker than the p-isomer.
38. Problem 03 Assertion Statement A very dilute acidic solution Solubility product of CdS is more than of gives yellow that of NiS. precipitate of CdS on passing hydrogen sulphide.
