JEE Main 2024 · 1 February · evening · Single correct · +4 / −1
Match List - I with List - II.
Choose the correct answer from the options given below :
| List I (Compound) | List II (Use) |
|---|---|
| (A) Carbon tetrachloride | (I) Paint remover |
| (B) Methylene chloride | (II) Refrigerators and air conditioners |
| (C) DDT | (III) Fire extinguisher |
| (D) Freons | (IV) Non Biodegradable insecticide |
- (a) (A)-(II), (B)-(III), (C)-(I), (D)-(IV)
- (b) (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
- (c) (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
- (d) (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
Answer and solution
Answer (b) (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Solution
Chemistry ma’am · 3 steps
Match each compound to the one property it is famous for, and the four uses fall into place.
- Recall the property. Each of these polyhalogen compounds is used for what it does best. Ask what each one is known for, then pick the use that fits.
Compound Key property Use (A) Carbon tetrachloride, CCl₄ dense, non-flammable vapour that blankets a flame (III) Fire extinguisher (B) Methylene chloride, CH₂Cl₂ volatile solvent that dissolves paint films (I) Paint remover (C) DDT toxic to insects and does not break down in nature (IV) Non-biodegradable insecticide (D) Freons (CFCs) non-toxic, non-flammable, easily liquefied gases (II) Refrigerators and air conditioners - Spot the pattern. The fixed pairs are (C)-(IV) and (D)-(II). The only option that has both is (b), and it also gives (A)-(III) and (B)-(I).
- So. The correct match is (A)-(III), (B)-(I), (C)-(IV), (D)-(II), which is option (b).
The idea to keep. For polyhalogen uses, link each compound to one property: CCl₄ smothers fire, CH₂Cl₂ dissolves paint, freons cool, DDT persists in nature.
Answer from the NTA final answer key. Solution by PrepWiser.