Question

D. Tick (/) the correct option:
1. We classify materials as :
(i) components and elements
(ii) mixture and substance
(iii) mixture and pure substance
2. A pure substance is called which :
(i) is made up of different kind of molecules
(ii) is made up of one kind of molecule
(iii) none of the above
3. filter paper is used in
(I) decantation
(ii) pure substances
(iii) none of these
4. this method of separating is very useful to cleaning river water to make it suitable for drinking
(i) evaporation
(ii) filtration
(iii) distillation.​

Answer 1

Answer:

1 . iii, 2. ii ,3. iii ,4. ii