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
13. Surface catalysis and Colloids
1. The size of particles in suspension, true solution and colloidal solution varies in the order
  • Suspension > Colloidal > True Solution
  • True Solution > Suspension > Colloidal
  • Suspension > Colloidal = True Solution
  • None of the above
2. A colloidal system has particles of what size?
  • 10-7 m to 10-5 m
  • 10-9 m to 10-7 m
  • 10-9 m to 10-6 m
  • 10-7 m to 10-9 m
3. Cloud or fog is an example of colloidal system of
  • Liquid dispersed in gas
  • Gas dispersed in gas
  • Solid dispersed in gas
  • Solid dispersed in liquid
4. Milk is
  • Fat dispersed in milk
  • Fat dispersed in water
  • Water dispersed in fat
  • Water dispersed in oil
5. Smoke is an example of
  • Gas dispersed in liquid
  • Gas dispersed in solid
  • Solid dispersed in gas
  • Solid dispersed in solid
6. Butter is a colloid formed when
  • Fat is dispersed in water
  • Fat globules are dispersed in water
  • Water is dispersed in fat
  • None of the above
7. Butter is
  • A gel
  • An emulsion
  • A sol
  • None of these
8. The extra stability of lyophilic colloids is due to
  • Charge on their particles
  • A layer of medium of dispersion on their particles
  • The smaller size of their particles
  • The larger size of their particles
9. Flocculation value is expressed in terms of
  • millimole L-1
  • mole L-1
  • gram L-1
  • mole mL-1
10. Light scattering takes place in
  • solutions of electrolyte
  • colloidal solutions
  • electrodialysis
  • electroplating
11. Minimum quantity of electrolyte which can precipitate any colloid is
  • Gold number
  • Avogadro number
  • Flocculation value
  • Peptisation value
12. The coagulation power of an electrolyte for As2S3 decreases in the order
  • Na+, Al3+, Ba2+
  • Cl-, SO42-, PO43-
  • Al3+, Ba2+, Na+
  • PO43-, SO42-, Cl-
13. The charge on As2S3 sol is due to the adsorbed
  • H+
  • OH-
  • O2-
  • S2-
14. The migration of colloidal particles under the influence of an electric field is known as
  • electro-osmosis
  • brownian movement
  • cataphoresis
  • dialysis
15. The sky looks blue due to
  • Dispersion effect
  • Reflection
  • Transmission
  • Scattering
16. Which one of the sols acts as protective colloid?
  • As2S3
  • Gelatin
  • Au
  • Fe(OH)3
17. Gold number represents
  • quantity of gold in alloys
  • percentage of gold in gold biscuits
  • colloid protective power
  • percentage quantity of gold in colloidal gold
18. What is gold number?
  • It is the weight in mg of the dry material which when added to 10 c.c. of red gold will prevent coagulation on adding 1 c.c. of 10% NaCl
  • It is the weight in mg of the dry material which when added to 1 c.c. of red gold sol will prevent coagulation on adding 10 c.c. of 10% NaCl
  • It is the weight in mg of the dry material which when added to 1 c.c. of red gold sol will prevent coagulation on adding 1 c.c. of 1% NaCl
  • None of the above
19. Gold number is minimum in case of
  • Gelatin
  • Egg albumin
  • Gum arabic
  • Starch
20. According to Langmuir adsorption isotherm, the amount of gas adsorbed at very high pressures
  • reaches a constant limiting value
  • goes on increasing with pressure
  • goes on decreasing with pressure
  • increases first and decreases later with pressure
21. Which colloid is used in treating eye disease?
  • Colloidal S
  • Colloidal antimony
  • Colloidal gold
  • Colloidal silver
22. As2S3 sol is
  • positive colloid
  • negative colloid
  • neutral colloid
  • none of the above
23. Small liquid droplets dispersed in another liquid is
  • suspension
  • emulsion
  • gel
  • true solution
24. Alum helps in purifying water due to
  • forming Si complex with clay particles
  • sulphate part which combines with the dirt and removes it
  • aluminium which coagulates the mud particles
  • making mud water soluble
25. In physical adsorption, the force associated are
  • ionic
  • covalent
  • van der Waal's
  • hydrogen bonding
26. Adsorption due to strong chemical forces is called
  • chemisorption
  • physisorption
  • reversible adsorption
  • both b & c
27. A catalyst increases the rate of reaction because it
  • increases the activation energy
  • decreases the energy barrier for reaction
  • decreases the collision diameter
  • increases the temperature coefficient
28. Which is not a characteristic of a catalyst?
  • It changes the equilibrium constant
  • It alters the reaction path
  • It increases the rate of reaction
  • It does not affect the average K.E. of the molecules
29. In the reversible reaction a catalyst is the substance which
  • increases the rate of the forward reaction
  • decreases the value of enthalpy change in the reaction
  • reduces the time required for reaching the equilibrium state
  • decreases the rate of the reverse reaction
30. In the hydrogenation of oils the catalyst used is
  • Iron
  • Platinum
  • Nickel
  • Molybdenum
31. In which of the following commercial processes a catalyst is not used?
  • Haber's process
  • Deacon's process
  • Solvay process
  • Lead chamber process
32. In the case of auto-catalysis
  • reactant catalyses
  • product catalyses
  • solvent catalyses
  • heat produced in the reaction catalyses
33. The enzyme which can catalyse the conversion of glucose to ethanol is
  • Zymase
  • Invertase
  • Maltase
  • Diastase
34. Rusting of iron is catalyzed by which of the following?
  • Fe
  • O2
  • Zn
  • H2O
35. In the Ostwald's process for the manufacture of HNO3, the catalyst used is
  • Mo
  • Fe
  • Ni
  • Pt
36. A catalyst
  • increases the average kinetic energy of molecules
  • increases the activation energy
  • decreases the activation energy
  • increases the frequency of collisions of reacting species
37. Which of the following will be most effective in the coagulation of Fe(OH)3 sol?
  • BaCl2
  • KCN
  • NaCl
  • Mg3(PO4)2
38. Tyndall effect in colloidal solutions is due to
  • scattering of light by the particles
  • reflection of light by the particles
  • movement of particles
  • coagulation of particles
39. Blood cells do not shrink in blood because blood is
  • hypotonic
  • isotonic
  • equimolar
  • hypertonic
40. An example of dispersion of a liquid in a gas is
  • vegetable oil
  • milk
  • foam
  • mist
41. Which of the following is not represented by sols
  • Adsorption
  • Tyndall effect
  • Flocculation
  • Paramagnetism
42. Tyndall effect is exhibited by
  • NaCl solution
  • Starch solution
  • Urea solution
  • FeCl3 solution
43. Surface tension of lyophilic solution is
  • Lower than water
  • More than water
  • Equal to water
  • None
44. Adsorption is multilayer in case of
  • Physical adsorption
  • Chemisorption
  • Both
  • None
45. Which of the following term is negative in adsorption?
  • ΔH
  • ΔS
  • Both a and b
  • ΔS is -ve and ΔH is +ve
46. Which of the following is adsorbate?
  • Silica gel
  • Charcoal powder
  • Wood
  • Ammonia
47. The decomposition of H2O2 can be slowed by the addition of a small amount of acetamide. The later acts as
  • Detainer
  • Stopper
  • Promoter
  • Inhibitor