Question

. Match the statements In Column A, with those in Column B.
Column B
Column A
(a) 78%
(b) Carbon dioxide
(c) Kerosene oil
1. The products of combustion of a fuel.
2. Percentage of oxygen in air.
3. Percentage of nitrogen present in air.
4. A gas present in air which turns limewater milky.
5. A petroleum product commonly used as household fuel.
(d) Water and carbon dioxide
(e) 21%​

Answer 1

(a )78% → Percentage of nitrogen present in air.

( b ) Carbon dioxide → A gas present in air which turns limewater milky.

( c, ) kerosene oil →A petroleum product commonly used as household fuel.

( d ) Water and Carbon dioxide →1. The products of combustion of a fuel.

( e) 21%. →Percentage of oxygen in air.