Question

Match the Pollutants in Column-I with their effects in Column-II and choose the correct option:

Column I	Column-II
(A) UV B rays	(I) Biomagnification.
(B) Biodegradable organic matter	(II) Greenhouse effect
(C) DDT	(III) Mutations.
(D) Chlorofluorocarbons	(IV) BOD.

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV).
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III).
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III).
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II).

Hint:

UV-B causes mutations, organic matter raises BOD, DDT biomagnifies and CFCs cause the greenhouse effect.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept
Each pollutant is linked to a particular effect in the environment.

Step 2: Matching A and B
(A) UV-B rays damage DNA and cause mutations, so (A)-(III).
(B) Biodegradable organic matter is measured as BOD, so (B)-(IV).

Step 3: Matching C and D
(C) DDT is not broken down and builds up at higher trophic levels, so (C)-(I) biomagnification.
(D) Chlorofluorocarbons trap heat and are greenhouse gases, so (D)-(II).

Step 4: Compare the options
The set (A)-(III), (B)-(IV), (C)-(I), (D)-(II) is the last option.

Final Answer:
The correct matching is (A)-(III), (B)-(IV), (C)-(I), (D)-(II). \[ \boxed{\text{(D) }\text{(A) - (III), (B) - (IV), (C) - (I), (D) - (II)}} \]