Class XII

Which has highest freezing point at 1 atm?
  1. 0.1 molal BaCl2BaCl2 solution
  2. 0.1 molal sugar solution
  3. 0.1 molalFeCl3FeCl3 solution
  4. 0.1 molal NaCl solution
Which among the following is soluble in n-octane?
  1. Methanol
  2. Chloroform
  3. Hexane
  4. Ethylene glycol
The rate at which a solid dissolves in liquid does not depend on
  1. Concentration
  2. Particle size
  3. Temperature
  4. Pressure
Camphor is often used in molecular mass determination because
  1. It is readily available
  2. It is volatile
  3. It is a solvent for organic substances
  4. It has very high cryoscopic constant
Which among the following is an example of a solid solution in which the solute is a gas?
  1. Humidity in air
  2. Pumice stone
  3. Hydrated salts
  4. Aerated drinks
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