Question

a solid mixture contains four constituents p,q, r, s. p consist 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 the form of tiny particles of a material whose corrosion is called rusting. and s is a white solid which is used in making ordinary dry cells.
1. what could be p, q, r, s?
2. how would you separate a mixture containing p, q, r, s

Answer 1

P is sand

Q is common salt

R is iron fillings

S is ammonium chloride

Seperate R by using a magnet to attract them . Then seperate S by sublimation . Shake P and Q with water and filter P. Seperate Q by evaporation method

Answer 2

Answer:

p sand - we can separate by filter by evaporation method

Q salt - same process as p

R iron - by magnetic

s Ammonium chloride- By sublimation method