Question

Match the following:-

1. Sulphur power from iron filling-

2. Magnesium Bromide-

3. Alum-

4. Used as refrigerant-

5. Airships-

6. Dust particles-

7. Purest form of water-

8. World water day-

9. Residue-

10. Sodium chloride-


Compound, 22nd March, Remain suspended, Helium, Filtration, Rain, Nitrogen, Loading, Magnetic separation, MgBr₂, HNO₃

Answer 1

Explanation:

Atmosphere is the thin layer of air that surrounds the earth. It is made up of various gases such as oxygen, nitrogen, carbon dioxides, dust particles and water vapour. The gravitational force of the

earth holds the atmosphere around it.