Question

Match the following:

	List - I		List - II
A.	Green house gas	1.	$CO$
B.	Silent killer gas	2.	$C{O}_2$
C.	Photochemical smog	3.	$CFCs$
D.	Acid rain	4.	$O_3,N{O}_2$
		5.	$N_2{O}_5,S{O}_3$

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

Answer 1

The correct option is A A-2, B-1, C-4, D-5

Carbon dioxide is the green house gas.
Carbon monoxide is silent killer gas.
Ozone and nitrogen dioxide are the components of photochemical smog.
Acid rain is caused by the oxides of nitrogen and sulfur such as dinitrogen pentoxide and sulfur trioxide.