Is Matter Around Us Pure ?

Mixture of ammonium chloride and sodium chloride can be separated by

The process of getting pure solid by cooling hot saturated solution is called .

A. Pure substances have fixed melting point.
B. The properties of compound are similar to that of its components.

A. Sea water is a mixture.
B. Gases can be liquified at low temperature and low pressure.

The common characteristic of suspension and colloidal solution is

Which of the following statements are true for pure substances ?
(i) Pure substances contain only one kind of particles.
(ii) Pure substances may be compounds or mixtures.
(iii) Pure substances have the same composition throughout.
(iv) Pure substances can be exemplified by all elements other than nickel.