Sodium chloride contains two elements, but it is still a pure substance. Assign reason.

Crude sodium chloride contains :

Stannous chloride and ferric chloride cannot be kept in the same container. Assign reasons.

Sodium chloride always contains water of crystallization .

Pure sodium chloride is obtained by :

Elements are the ________ form of pure substances.

What are the two types of pure substances?

Assertion : Sodium chloride f ( table salt ) is dissolved in water Reason : Polat substances are solble in polar solvents.

A gas exerts pressure on the wall of the container. Assign reason.

Sulphur disappears when boiled with aqueous solution of sodium sulphite. Assign reason.