Question

The correct match is:

	List - I		List - II
A.	Freons	1.	Rise in temperature of earth's surface
B.	Ozone	2.	Forms holes in ozone layer
C.	Carbon dioxide	3.	Protects life from UV raidation
D.	Sulphur dioxide	4.	Increase in fluoride ion concentration
		5.	Acid rain

• A. A-2, B-3, C-1, D-5
• B. A-3, B-4, C-5, D-2
• C. A-1, B-3, C-4, D-2
• D. A-4, B-2, C-1, D-3

Answer 1

The correct option is A A-2, B-3, C-1, D-5

Freons are responsible for the hole in ozone layer.
The life is protected from harmful UV radiation by ozone.
The temperature of earths surface rises due to increase in the level of carbon monoxide, as it is a greenhouse gas.
Sulphur dioxide causes acid rain.