A solid mixture contains four consituents P, Q, and S.P consists of tiny graing and it is mixed with cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the process of evaporation. R is in the from of tiny particles of a material whose corrosion is called resting. And S is a white solid which is used in mking ordinary dry cells.
(a) What could P, Q R and S be ?
(b) How would you separte a mixture containing P, Q, R and S ?

A solid mixture contains four constituents P, Q, and S. P consists of tiny grains and it is mixed with cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the process of evaporation. R is in the from of tiny particles of a material whose corrosion is called resting. And S is a white solid which is used in making ordinary dry cells. (a) What could P, Q R and S be ? (b) How would you separate a mixture containing P, Q, R and S ?

Tiny particles of solid matter suspended in air are called ________.

A compound that is a white solid which absorbs water vapour from the air is :

The process of separating soluble solid from the solution by heating or evaporating Is called________

Which one of the following oxides of nitrogen is a white solid?

There are four substance W, X, Y and Z. The substance W is a dark violet solid having diatomic molecules. A solution of W in alcohol is used as a common antiseptic C. The susbstance X is a white solid which is usually recovered from sea water on a large scale. The substance Y is a white solid which is insoluble in water and used in the form of small balls for the safe storage of woollen clothes. The substance Z is a yet another white solid which is used in making commonly used dry cells. (a) Name (i) W (ii) X (iii) Y and (iv) Z. (b) Out of W, X, Y and Z, which substance/substances can undergo sublimation ? (c ) Which substance is organic in nature ? (d) what is the name of substance C ? (e) Which substance belongs to the halogen family ?