Match List-I with List-II and select the correct answer using the code given below. List-I: Constituent of Paint List-II: Example A. Pigment 1. Zinc oxide B. Extender 2. China clay C. Thinner 3. Naphthenate D. Drier 4. Turpentine | UPSC CAPF 2026 Q No 105

Accepted Answer: (B) A-1, B-2, C-4, D-3

Topic Covered: Chemistry and Energy

Key Concept: Chemical properties, fuels, petroleum and oxidation states

The correct choice follows from the standard scientific definition or process involved. “A-1, B-2, C-4, D-3” matches the relevant biological, ecological, chemical or energy concept, while the alternatives conflict with the core principle.

The key is to apply the central fact, formula, definition or relationship tested in the question and then eliminate alternatives that do not satisfy it.