Match List-I with List-II and select the correct answer: List-I (Organic compound) List-II (Use) a. Butane 1. In the production of saccharin b. Toluene 2. LPG fuel c. Benzene 3. In dry cleaning d. Urotropin 4. In the treatment of urological disease A. a-3, b-1, c-4, d-2 B. a-2, b-3, c-1, d-4 C. a-1, b-4, c-2, d-3 D. a-4, b-2, c-3, d-1

The correct answer is C. a-1, b-4, c-2, d-3.

• Butane is a gas that is used as a fuel in LPG (liquefied petroleum gas).
• Toluene is a liquid that is used in the production of saccharin, a sweetener.
• Benzene is a liquid that is used in dry cleaning.
• Urotropin is a solid that is used in the treatment of urological diseases.

Here is a brief explanation of each option:

• Option A: a-3, b-1, c-4, d-2 is incorrect. Butane is not used in the production of saccharin.
• Option B: a-2, b-3, c-1, d-4 is incorrect. Toluene is not used in the treatment of urological diseases.
• Option C: a-1, b-4, c-2, d-3 is correct. Butane is used as a fuel in LPG. Toluene is used in the production of saccharin. Benzene is used in dry cleaning. Urotropin is used in the treatment of urological diseases.
• Option D: a-4, b-2, c-3, d-1 is incorrect. Urotropin is not used in the production of saccharin.