Question

(
d
)
Water
and
carbon
dioxida
in Column B
Column A
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.
(a) 78%
(b) Carbon dioxide
(c) Kerosene oil
(e) 21%
Write 'True' or false​

Answer 1

Sorry I don't understand..........,......... Sorry