Solutions Test

Solutions

This is Solutions Test-02 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Solubility of gas decreases with
  • A
    Increase in temperature
    Correct
  • B
    Increases in pressure
  • C
    Decreases in temperature
  • D
    Both (b) and (c)
2
Solubility of which gas is maximum in water?
  • A
    Nitrogen
  • B
    Carbon dioxide
  • C
    Oxygen
  • D
    Ammonia
    Correct
3
Molarity is preffered over molarity in handling solutions in chemistry laboratory because
  • A
    Molarity changes with temperature
    Correct
  • B
    Molality changes with pressure
  • C
    Molality changes with temperature
  • D
    Molarity changes with pressure
4
Aquatic animals are more comfortable in cold water rather that warm water because
  • A
    Concentration increases with increase in temperature
  • B
    Solubility of gas in liquid increases with decrease in temperature
    Correct
  • C
    Solubility of gas in liquid changes with pressure
  • D
    They are cold blooded animals
5
The molal depression constant depends upon
  • A
    Vapour pressure of the solution
  • B
    Heat of solution of the solute in the solvent
  • C
    Nature of the solvent
    Correct
  • D
    Nature of the solute
6
Vapour pressure of a liquid is constant at constant temperature because
  • A
    Rate of evaporation increases
  • B
    Ra Rate of evaporation = rate of condensation
    Correct
  • C
    Rate of condensation increases
  • D
    Rate of evaporation  rate of condensation
7
In the depression of freezing point experiment, it is found that
  • A
    The vapour pressure of the solution is less than that of pure solvent (ans)
    Correct
  • B
    Both solute and solvent molecules solidify at freezing point
  • C
    The vapour pressure of the solution is more than that of pure solvent
  • D
    Only solute molecules solidify at the freezing point
8
If the temperature of an aqueous solution increases, it will cause
  • A
    Decrease in mole fraction
  • B
    Decrease in molarity
    Correct
  • C
    Decrease in molality
  • D
    Decrease in % w/w
9
Solution is defined as
  • A
    Compound of two elements
  • B
    Heterogeneous mixture
  • C
    Homogeneous mixture
    Correct
  • D
    Compound of more than two elements
10
Amalgam of mercury with sodium is an example of
  • A
    Liquid in gas
  • B
    Liquid in solid
    Correct
  • C
    Gas in solid
  • D
    Solid in liquid
11
Which among the following is miscible in each other?
  • A
    Methanol and benzene
  • B
    Methanol and water
    Correct
  • C
    All of these
  • D
    Benzene and water
12
Which among the following is an example of liquid in solid?
  • A
    Hydrated salts
    Correct
  • B
    Alloys
  • C
    Aerated drinks
  • D
    Sugar solution
13
Which among the following is an example of a solid solution in which the solute is a gas?
  • A
    Pumice stone
    Correct
  • B
    Aerated drinks
  • C
    Humidity in air
  • D
    Hydrated salts
14
The type of intermolecular interaction present in n-Hexane and n-Octane is
  • A
    Dipole-dipole interaction
  • B
    Vander wall forces of interaction
    Correct
  • C
    Hydrogen bonding
  • D
    Ion-dipole interaction
15
Mathematical expression relating molarity and molality is
  • A
    Option A
  • B
    Option B
  • C
    Option C
    Correct
  • D
    Option D