NEET UG 2017 · Chemistry · Question 71
NEET 2017 Chemistry, question 71
Question 71 of the NEET 2017 paper (code A) is a Chemistry question from Environmental Chemistry. Its idea, Carbon Monoxide Sources and Sinks, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 2.
Updated 2026-10-08
Q71 · Chemistry
Which of the following is a sink for CO ?
- 1Haemoglobin
- 2Micro organisms present in the soilOfficial answer
- 3Oceans
- 4Plants
Official answer: option 2 · CBSE official answer key
Same idea
The only question on Carbon Monoxide Sources and Sinks
No other NEET paper from 2017–2026 tested this exact idea.
Carbon Monoxide Sources and Sinks: every question and how it was framed
The chapter
Environmental Chemistry in ten years of NEET
6 questions from 2017–2026, asked in 6 of 10 papers, about 0.6 a paper. Environmental Chemistry alone had 6.