Solutions Test

Solutions

This is Solutions Test-01 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Example of solution of liquid in gas is
  • A
    Dry air
  • B
    moist air
    Correct
  • C
    mercury in gold
  • D
    alcohol in water
2
Molality of a solution relates the
  • A
    moles of solute and mass of solvent
    Correct
  • B
    Moles of solution and mass of solution
  • C
    Volume of solution and moles of solute
  • D
    volume of solute and volume of solvent
3
Which law shows relation between pressure and solubility of a gas in solvent
  • A
    Le chaterliers principle
  • B
    Henry’s law
    Correct
  • C
    Rate law
  • D
    Raoult’s law
4
The tendency of offspring to differ from parents is called
  • A
    Inheritance
  • B
    Resemblance
  • C
    Variation
    Correct
  • D
    Heredity
5
For ideal solution the enthalpy of mixing of the pure components to form the solution is
  • A
    $\vartriangle {H_{mix}}\; = + ve\;\;$
  • B
    $\vartriangle {H_{mix}}\; = - ve\;\;\;\;$
  • C
    $\vartriangle {H_{mix}}\; = {\text{ }}0$
    Correct
  • D
    none of these
6
For ideal solution the volume of mixing of the pure components to form the solution is
  • A
    $\vartriangle {V_{mix}}\; = {\text{ }}0$
    Correct
  • B
    none of these
  • C
    $\vartriangle {V_{mix}}\; = + ve$
  • D
    $\vartriangle {V_{mix}}\; = - ve$
7
Molarity of the solution is
  • A
    The number of moles of the solute dissolved per kilogram of the solvent
  • B
    The number of gram mole of the solute dissolved per ml. of the solution
  • C
    The number of moles of solute dissolved per litre of the solution
    Correct
  • D
    Number of grams of solute dissolved per kilogram of solvent
8
Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is
  • A
    Directly proportional to the mole fraction
    Correct
  • B
    Inversely proportional to the mole fraction
  • C
    Directly proportional to the volume
  • D
    Directly proportional to the temperature
9
Minimum boiling azeotrope is form by the solution which show
  • A
    Large negative deviation from Raoult’s law
  • B
    Positive deviation from Raoult’s law
  • C
    Negative deviation from Raoult’s law
  • D
    Large positive deviation from Raoult’s law
    Correct
10
Which of the following is a colligative property?
  • A
    Change in free energy
  • B
    Dipole moment
  • C
    Heat of vapourization
  • D
    Osmotic pressure
    Correct
11
Cryoscopic constant of a liquid is
  • A
    The elevation for 1 molar solution
  • B
    A factor used for calculation of elevation in boiling point
  • C
    Decrease in freezing point when 1 mole of solute is dissolved per Kg of the solvent
    Correct
  • D
    Decrease in freezing point when 1 g of solute is dissolved per kg of the solvent
12
Two solutions have different osmotic pressures. The solution of higher osmotic pressure is called
  • A
    Hypertonic solution
    Correct
  • B
    Isotropic solution
  • C
    Isotonic solution
  • D
    Hypotonic solution
13
At constant temperature the osmotic pressure of a solution is
  • A
    Directly proportional to the square root of the concentration
  • B
    Directly proportional to the concentration
    Correct
  • C
    Inversely proportional to the concentration
  • D
    Directly proportional to the square of the concentration
14
The sum of all mole fraction for a mixture is always equal to
  • A
    0
  • B
    2
  • C
    3
  • D
    1
    Correct
15
The rate at which a solid dissolves in liquid does not depend on
  • A
    Pressure
    Correct
  • B
    Temperature
  • C
    Concentration
  • D
    Particle size