Question

Q27. Write two uses of:
1. Oxygen
II. Nitrogen​

Answer 1

Answer:

1.Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.

2.Nitrogen is the chemical element with the symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.

Answer 2

Answer:

Oxygen=helps us to breath,

Oxidation reactions - burning, rusting and cell respiration

Nitrogen=used to make fertiliser, is used to make ammonia