Detailed explanation will be added soon. In the meantime, you can practice more questions from UPSC CSE 2021 Mains or browse the complete PYQ collection.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
More Science and Technology questions
From across UPSC, JKPSC, and JKSSB papers — same subject, different years.
Identify the correct match:1. Washing soda – Na₂CO₃
2. Baking soda – NaHCO₃
3. Gypsum – CaSO₄·2H₂O
4. Plaster of Paris – CaSO₄·½H₂O
How m...
Introduce the concept of Artificial Intelligence (AI). How does AI help clinical diagnosis? Do you perceive any threat to privacy of the ...
The known forces of nature can be divided into four classes, viz. gravity, electromagnetism, weak nuclear force and strong nuclear force....
Assertion (A): Raindrops usually hit the earth’s surface with constant velocity.
Reason (R): A falling body through a viscous medium atta...
The extraction of aluminum is carried out by which of the following processes?