Is Matter Aroun...

The components of air can be separated because of the difference in their :

While obtaining pure copper sulphate from an impure sample by crystallization method what will finally be obtained in the china dish?

The substances whose constituents can be separated by chemical or electrochemical reactions have the following properties. 

The mixture of acetone and water is separated by :

Mark the statement which is included in the process of separating oxygen gas from air.
(I) All other gases are separated from air.
(II) The air is compressed by increasing the pressure.
(III) The air is cooled by decreasing the temperature to get liquid air.

Two liquids having different boiling point can be separated by :

Mark the incorrect statement
  (I) Fractionating column is a long tube.
 (II) Fractionating column is provided with obstructions to the passage of vapours upwards and to the liquids downward.

Mark the statement which is not true for fractional distillation of air.

Why is crystallisation is used for obtaining pure copper sulphate from an impure sample rather than evaporation?

The component of the solution that is dissolved in the solvent is called ?