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1. Which of the following is the energy of a possible excited state of hydrogen?

  • (1) –6.8 eV
  • (2) –3.4 eV
  • (3) +6.8 eV
  • (4) +13.6 eV

2. In the following sequence of reactions:

 

The product C is:

  • (1) C6H5CH3
  • (2) C6H5CH2OH
  • (3) C6H5CHO
  • (4) C6H5COOH

3. Which compound would give 5-keto-2-methyl hexanal upon ozonolysis?

4. The ionic radii (in Å) of N3–, O2– and F are respectively:

  • (1) 1.36, 1.71 and 1.40
  • (2) 1.71, 1.40 and 1.36
  • (3) 1.71, 1.36 and 1.40
  • (4) 1.36, 1.40 and 1.71

5. The color of KMnO4 is due to:

  • (1) d – d transition
  • (2) L → M charge transfer transition
  • (3) σ – σ* transition
  • (4) M → L charge transfer transition

6. Assertion: Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.
Reason: The reaction between nitrogen and oxygen requires high temperature.

  • (1) Both assertion and reason are correct, but the reason is not the correct explanation for the assertion
  • (2) The assertion is incorrect, but the reason is correct
  • (3) Both the assertion and reason are incorrect
  • (4) Both assertion and reason are correct, and the reason is the correct explanation for the assertion

7. Which of the following compounds is not an antacid?

  • (1) Cimetidine
  • (2) Phenelzine
  • (3) Ranitidine
  • (4) Aluminium hydroxide

8. In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false?

  • (1) Al2O3 is mixed with CaF2 which lowers the melting point of the mixture and brings conductivity
  • (2) Al3+ is reduced at the cathode to form Al 
  • (3) Na3AlF6 serves as the electrolyte
  • (4) CO and CO2 are produced in this process

9. Match the catalysts to the correct processes:

Catalyst

  • (A) TiCl3
  • (B) PdCl2
  • (C) CuCl2
  • (D) V2O5

Process

  • (i) Wacker process
  • (ii) Ziegler - Natta polymerization
  • (iii) Contact process
  • (iv) Deacon’s process
  • (1) (A) –(ii), (B) –(i), (C) –(iv), (D) –(iii)
  • (2) (A) –(ii), (B) –(iii), (C) –(iv), (D) –(i)
  • (3) (A) –(iii), (B) –(i), (C) –(ii), (D) –(iv)
  • (4) (A) –(iii), (B) –(ii), (C) –(iv), (D) –(i)

10. In the reaction:

 

the product E is

11. Which polymer is used in the manufacture of paints and lacquers?

  • (1) Glyptal
  • (2) Polypropene
  • (3) Poly vinyl chloride
  • (4) Bakelite

12. The number of geometric isomers that can exist for square planar [Pt (Cl) (py) (NH3) (NH2OH)]+ is (py = pyridine):

  • (1) 3
  • (2) 4
  • (3) 6
  • (4) 2

13. Higher order (>3) reactions are rare due to:

  • (1) increase in entropy and activation energy as more molecules are involved
  • (2) shifting of equilibrium towards reactants due to elastic collisions
  • (3) loss of active species on collision
  • (4) low probability of simultaneous collision of all the reacting species

14. Which among the following is the most reactive?

  • (1) Br2
  • (2) I2
  • (3) ICl
  • (4) Cl2

15. Two Faraday of electricity is passed through a solution of CuSO4. The mass of copper deposited at the cathode is: (at. mass of Cu = 63.5 amu)

  • (1) 63.5 g
  • (2) 2 g
  • (3) 127 g
  • (4) 0 g

16. 3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06 N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is:

  • (1) 36 mg
  • (2) 42 mg
  • (3) 54 mg
  • (4) 18 mg

17. The synthesis of alkyl fluorides is best accomplished by:

  • (1) Sandmeyer’s reaction
  • (2) Finkelstein reaction
  • (3) Swarts reaction
  • (4) Free radical fluorination

18. The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (Mol. Wt. 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?

  • (1) 1/206
  • (2) 2/309
  • (3) 1/412
  • (4) 1/103

19. Which of the vitamins given below is water soluble?

  • (1) Vitamin D
  • (2) Vitamin E
  • (3) Vitamin K
  • (4) Vitamin C

20. The intermolecular interaction that is dependent on the inverse cube of distance between the molecule is:

  • (1) ion-dipole interaction
  • (2) London force
  • (3) hydrogen bond
  • (4) ion-ion interaction

21. The following reaction is performed at 298 K.

 

The standard free energy of formation of NO(g) is 86.6 kJ/mol at 298 K. What is the standard free energy of formation of NO2 (g) at 298 K? (KP = 1.6 × 1012)



22. Which of the following compounds is not colored yellow?

  • (1) K3[Co(NO2)6]
  • (2) (NH4)3[As(Mo3O10)4]
  • (3) BaCrO4
  • (4) Zn2[Fe(CN)6]

23. In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The  percentage of bromine in the compound is: (at. Mass Ag = 108; Br = 80)

  • (1) 36
  • (2) 48
  • (3) 60
  • (4) 24

24. Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of 4.29 Å. The radius of sodium atom is approximately:

  • (1) 3.22 Å
  • (2) 5.72 Å
  • (3) 0.93 Å
  • (4) 1.86 Å

25. Which of the following compounds will exhibit geometrical isomerism?

  • (1) 3-Phenyl-1-butene
  • (2) 2-Phenyl-1-butene
  • (3) 1,1-Diphenyl-1-propane
  • (4) 1-Phenyl-2-butene

26. The vapour pressure of acetone at 20oC is 185 torr. When 1.2 g of a non -volatile substance was dissolved in 100 g of acetone at 20oC, its vapour pressure was 183 torr. The molar mass (g mol-1) of the substance is:

  • (1) 64
  • (2) 128
  • (3) 488
  • (4) 32

27. From the following statements regarding H2O2, choose the incorrect statement:

  • (1) It decomposes on exposure to light
  • (2) It has to be stored in plastic or wax lined glass bottles in dark
  • (3) It has to be kept away from dust
  • (4) It can act only as an oxidizing agent

28. Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

  • (1) BeSO4
  • (2) BaSO4
  • (3) SrSO4
  • (4) CaSO4

29. The standard Gibbs energy change at 300 K for the reaction 2A ⇌ B + C is 2494.2 J. At a given time, the composition of the reaction mixture is [A] = ½, [B] = 2 and [C] = ½. The reaction proceeds in the: [R= 8.314 J/K/mol, e = 2.718]

  • (1) reverse direction because Q > Kc
  • (2) forward direction because Q < Kc
  • (3) reverse direction because Q < Kc
  • (4) forward direction because Q > Kc

30. Which one has the highest boiling point?

  • (1) Ne
  • (2) Kr
  • (3) Xe
  • (4) He

Answers

  1. 2
  2. 3
  3. 1
  4. 2
  5. 2
  6. 4
  7. 2
  8. 3
  9. 1
  10. 2
  11. 1
  12. 1
  13. 4
  14. 3
  15. 1
  16. 4
  17. 3
  18. 3
  19. 4
  20. 1
  21. 3
  22. 4
  23. 4
  24. 4
  25. 4
  26. 1
  27. 4
  28. 1
  29. 1
  30. 3