Question

4 Major part of the air is constituted by
(a) nitrogen
(b) orygen
(c) carbon dioxide
(d) inert gases
5. Which of the following gas helps in burning?
(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide
(d) Carbon monoxide
6. Which one of the following will add to garbage?
(a) Wrapper of a biscuit pack (b) Tin of a cold drink © used Syringe (d) All of these
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Answer 1

Major part of the air is constituted by

(a) nitrogen

Which of the following gas helps in burning?

(b) Oxygen

Which one of the following will add to garbage?

(d) All of these

Answer 2

Answer:

Major part of the air is constituted by

(a) nitrogen

Which of the following gas helps in burning?

(b) Oxygen

Which one of the following will add to garbage?

(d) All of these

Explanation: