Match column-I with column-II and choose the correct option.

	Column-I		Column-II
A.	DDT	i.	CH4, CO2
B.	Platinum- palladium and Rhodium	ii.	SO2
C.	Acid rain	iii.	Biological magnification
D.	Global warming	iv.	Catalytic converter

	A	B	C	D
1.	iv	iii	ii	i
2.	i	iii	ii	iv
3.	ii	iii	iv	i
4.	iii	iv	ii	i

• A

  1

• B

  2

• C

  3

• D

  4