Surface Chemistry Test

Surface Chemistry

This is surface chemistry Test-03 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Adsorption is a
  • A
    Colligative property
  • B
    Oxidation process
  • C
    Reduction process
  • D
    Surface phenomenon
    Correct
2
Which is correct in case of Vander waals adsorption?
  • A
    Low temperature, low pressure
  • B
    High temperature , low pressure
  • C
    High temperature , high pressure
  • D
    Low temperature, high pressure
    Correct
3
Which adsorption takes place at low temperature?
  • A
    Chemical
  • B
    Physical
    Correct
  • C
    Both (a) and (b)
  • D
    None of these
4
Pt and Pd adsorb large volume of hydrogen under specific conditions. The hydrogen so adsorbed is called
  • A
    Occluded hydrogen
    Correct
  • B
    Atomic hydrogen
  • C
    Adsorbed hydrogen
  • D
    Reactive hydrogen
5
When adsorption of oxalic acid is carried out on activated charcoal, then activated charcoal is known as
  • A
    Adsorbent
    Correct
  • B
    Adsorbate
  • C
    Absorption
  • D
    Adsorber
6
Which of the following metal solution cannot be prepared by Bredig’s arc method?
  • A
    Gold
  • B
    Potassium
    Correct
  • C
    Platinum
  • D
    Copper
7
The average molecular mass of colloidal can be determined by
  • A
    None of these
  • B
    Osmotic pressure measurement
    Correct
  • C
    Tyndall effect
  • D
    Flocculation value
8
Which of the following processes does not involve a catalyst?
  • A
    Thermite process
    Correct
  • B
    Contact process
  • C
    Oswald process
  • D
    Haber process
9
Which type of a property is the Brownian movement of colloidal solution?
  • A
    Electrical
  • B
    Optical
  • C
    Electrochemical
  • D
    Mechanical
    Correct
10
Which of the following is not exhibited by solutions?
  • A
    Absorption
  • B
    Paramagnetism
  • C
    Tyndall effect
  • D
    Flocculation
    Correct
11
Hydrophilic colloids are stable due to
  • A
    Large size of particles
  • B
    Small size of particles
  • C
    Layer of dispersion medium on their particles
    Correct
  • D
    Negative charged particles
12
Which of the following methods is used for sol destruction?
  • A
    Dialysis
  • B
    Addition of an electrolyte
    Correct
  • C
    Diffusion through semi permeable membrane
  • D
    Condensation
13
Liquid – liquid solutions are known as
  • A
    Aerosols
  • B
    Emulsions
    Correct
  • C
    Foam
  • D
    Gel
14
Flocculation value is expressed in terms of
  • A
    Moles/liter
  • B
    Grams/liter
  • C
    Moles/millilitre
  • D
    Millimoles/liter
    Correct
15
In aerosol the dispersion medium is
  • A
    Solid
  • B
    None of these
  • C
    Liquid
  • D
    Gas
    Correct