Question

Chapter : POLLUTION OF AIR AND WATER

I. Fill in the blanks by selecting the correct choice from words give
1. Earth's temperature is increasing due to.
easing due to .....................
(CFCs/greenhouse effect)
2. Exhaust gases from vehicles contain .......
. (Sulphur dioxide/Carbon monoxide)
3. Purification of water to remove suspended impurities is done by ...
(potassium permanganate/filtration)
4. The major greenhouse gas is ....
(CO/methane).
...
.........​

Answer 1

Answer:

1. Greenhouse effect

2. Carbon monoxide

3. Filtration

4. CO