Carbon monoxide from incomplete burning of petrol is dangerous because it:
AReduces blood oxygen capacity
BBurns exposed skin badly
CDissolves marble statues
DBlocks sunlight from crops
Answer & Solution
Correct answer: A. Reduces blood oxygen capacity
1. It is a poisonous gas from vehicles.
2. It cuts the blood's oxygen-carrying capacity.
3. Complete burning gives carbon dioxide instead.
_Source: syllabus Science, Chapter 18, Pollution of Air and Water._
Keep practising Environment & Ecology
Browse all Environment & Ecology questions for UPSC CSE, or explore more Environment topics.