Question

Match the species in Column I with their types in Column II. 

• A. A → 4, B → 3, C → 2, D → 1
• B. A → 1, B → 2, C → 3, D → 1
• C. A → 2, B → 1, C → 4, D → 3
• D. A → 3, B → 1, C → 2, D → 4

Hint:

DDT is a pesticide, NaClO\(_3\) is a herbicide, Cl\(_2\) is a disinfectant, and PAN is associated with photochemical smog. These properties help in matching them correctly.

Answer 1

The Correct Option is A

Let’s match the species from Column I to their correct types in Column II: 
1. DDT (A): DDT (Dichlorodiphenyltrichloroethane) is a well-known pesticide, so it matches with 4. Pesticides. 
2. NaClO\(_3\) (B): Sodium chlorate (NaClO\(_3\)) is commonly used as a herbicide, so it matches with 3. Herbicides. 
3. Cl\(_2\) (C): Chlorine gas (Cl\(_2\)) is a disinfectant, so it matches with 2. Disinfectant. 
4. PAN (D): PAN (Peroxyacetyl nitrate) is involved in the formation of photochemical smog, so it matches with 1. Photochemical smog. 
Thus, the correct matching is \( \boxed{{A}} \), A → 4, B → 3, C → 2, D → 1.