1. Physical chemistry
    2. 1. The solid state
    2. Language of Chemistry
    3. Gaseous and Liquid states
    4. Stoichiometry
    5. Solutions
    6. Structure of Atom
    7. Chemical equilibrium
    8. Nuclear chemistry (Radioactivity)
    9. Ionic equilibrium
    10. Chemical Bonding
    11. Chemical kinetics
    12. Concepts of Acids, Bases and Salts
    13. Surface catalysis and Colloids
    14. Redox reactions
    15. Chemical energetics
    16. Volumetric analysis
    17. Electrochemistry
  2. Inorganic chemistry
    3. 18. Introduction
    19. Periodic table
    20. Hydrogen and its compounds
    21. General aspects of Metallergy
    22. Alkali metals
    23. Alkaline metals
    24. Boron family
    25. Carbon family
    26. Nitrogen family
    27. Oxygen family
    28. Fluorine family
    29. Inert gases
    30. Transition metals
    31. Coordination compounds
    32. Analytical chemistry
  3. Organic chemistry
    4. 33. Purification and analysis of organic compounds
    34. Nomenclature of Organic compounds
    35. Reaction Mechanisms
    36. Hydrocarbons
    37. Haloalkanes (Alkyl halides)
    38. Alcohol, Phenol and Ether
    39. Aldehyde and Ketones
    40. Carboxylic acids
    41. Compounds conatining Nitrogen
    42. Polymers
    43. Chemistry in daily life
Physical chemistry
7. Chemical equilibrium
1. For the reaction N2 + O2 ⇌ 2NO, the equilibrium constant Kc changes with the change in

[MOE Model, MOE 2008]

  • Total pressure
  • Amount of NO
  • Amount of N2 and O2
  • Temperature
2. In the given reaction, which one favors the formation of product? 2SO2 + O2 ⇌ 2SO3, ΔH = -ve
  • Decrease in pressure
  • Increase in pressure
  • Increase in concentration of SO2
  • Increase in temperature
3. The synthesis of ammonia from Nitrogen and hydrogen proceeds with a decrease in volume, this reaction will be favored by

[MOE 2064]

  • Decrease in pressure
  • Increase in pressure
  • Unaffected by pressure
  • Addition of ammonia
4. According to Le-Chatelier's principle, which of the following shifts the reaction of Haber's process for formation of NH3 to right side?

[MOE 2003, MOE 2062]

  • Concentration of H2 is decreased
  • Temperature is increased
  • Pressure is increased
  • Pressure is decreased
5. Which of the following expression represents the solubility product (Ksp) of lead (II) chloride?

[MOE 2063]

  • [Pb2+][Cl-]
  • [Pb2+] + [2Cl-]
  • [Pb2+][Cl-]2
  • [Pb2+][Cl2]
6. At equilibrium: equilibrium constant of a reaction is not affected by

[MOE 2058]

  • Temperature
  • Catalyst
  • Concentration of reactant
  • Concentration of product
7. For A + 2B ⇌ 2C + D: 1.1 mole of A combines with 2.2 moles of B at equilibrium and 0.2 moles of C is produced, then the value of equilibrium constant will be

[MOE 2056]

  • 0.001
  • 0.002
  • 0.003
  • 0.004
8. Le-Chatelier's principle was applicable to the following reaction, when temperature increases, reaction shifts to the right, then the reaction will be

[MOE 2053]

  • Endothermic
  • Exothermic
  • Adiabatic
  • Isothermal
9. Ethyl alcohol and acetic acid are mixed in equimolar proportion; equilibrium is attained when 2/3 of the acid and alcohol are consumed. The equilibrium constant of the reaction will be

[IOM 2006]

  • 0.04
  • 0.4
  • 4.0
  • 40
10. For the reaction PCl3(g) + Cl2(g) ⇌ PCl5(g), the value of Kc at 250°C is 26. Then the value of Kp at this temperature

[IOM 2005]

  • 0.61
  • 0.57
  • 0.83
  • 0.46
11. If 'a' moles of N2O4 confined in a volume 'V' undergoes dissociation and 'x' moles dissociate at equilibrium, then the dissociation constant 'K' will be given by

[IOM 2008]

  • x2/(a-x)V
  • 4x2/(a-2x)V
  • 2x2/(a-x)V
  • x/(a-2x)
12. The equilibrium constant for the reaction, 2NH3 ⇌ N2 + 3H2, is 6 × 10-3. The equilibrium constant for the reverse reaction N2 + 3H2 ⇌ 2NH3 will be

[IOM 2008]

  • 1.12 × 103
  • 1.67 × 102
  • 1.51 × 103
  • 1.67 × 10-5
13. Equilibrium of the reaction: 2SO2 + O2 ⇌ 2SO3 + 45.2 Kcal will shift to left at

[MOE 2009]

  • Low temperature and low pressure
  • High temperature and low pressure
  • Low temperature and high pressure
  • High temperature and high pressure
14. The value of equilibrium constant for a reaction is 1 means the reaction

[MOE 2009]

  • Is one that yields 50% of products
  • Proceeds to almost completion
  • Is not very favorable to yield product
  • Does not occur
15. Which of the following aqueous solution will have pH less than 7.0 at 298 K?

[MOE 2009]

  • KNO3
  • NaOH
  • FeCl3
  • NaCN