UPSC CAPF (AC) 2024 Paper I · Question 19
Question 19 of the UPSC CAPF (AC) 2024 Paper I (4 August 2024). Try it first, then open the answer and explanation.
Match List I with List II and select the correct answer using the code given below the Lists: List I (Pigment in paint) List II (Example) A. Natural pigment 1. Chalk B. Synthetic pigment 2. White lead C. Reactive pigment 3. Red lead D. Inert pigment 4. Titanium dioxide
- A-1, B-2, C-3, D-4
- A-1, B-3, C-2, D-4
- A-4, B-3, C-2, D-1
- A-4, B-2, C-3, D-1
सूची I को सूची II से सुमेलित कीजिए और सूचियों के नीचे दिए गए कूट का प्रयोग कर सही उत्तर चुनिए : सूची I (पेंट में वर्णक) सूची II (उदाहरण) A. प्राकृतिक वर्णक 1. खड़िया (चॉक) B. कृत्रिम (संश्लिष्ट) वर्णक 2. सफेद सीसा C. अभिक्रियाशील वर्णक 3. मिनियम (रेड लेड) D. अक्रिय वर्णक 4. टाइटेनियम डाइऑक्साइड
- A-1, B-2, C-3, D-4
- A-1, B-3, C-2, D-4
- A-4, B-3, C-2, D-1
- A-4, B-2, C-3, D-1
Show answer
Answer: (1) A-1, B-2, C-3, D-4
उत्तर: (1) A-1, B-2, C-3, D-4
The key reads the lists in order: chalk (calcium carbonate) is a naturally occurring mineral pigment, white lead (basic lead carbonate) is a manufactured, synthetic pigment, red lead (Pb3O4, minium) is a reactive pigment that reacts with the oil binder and inhibits rusting of iron, and titanium dioxide is a chemically inert white pigment, giving A-1, B-2, C-3, D-4. Many paint-technology texts instead treat chalk as an inert extender, which leads to option (d). (Official key; some sources differ.)