2021 source guide · Biology

NEET 2021 Biology Breathing and Exchange of Gases Questions

Use this page to connect the official 2021 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 100 verified questions →Check official NTA archive ↗

What to master

ventilation, gas exchange, transport and respiratory regulation.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 1/5

Which description best defines Tidal volume?

A. air left after forceful expiration
B. extra air inspired after normal inspiration
C. maximum expired after maximum inspiration
D. about 500 mL of air inspired or expired in a normal breath

Example 2 · difficulty 3/5

If tidal volume is 500 mL and inspiratory reserve volume is 3000 mL, inspiratory capacity is:

A. 3500 mL
B. 3000 mL
C. 4000 mL
D. 2300 mL

Example 3 · difficulty 2/5

Which volume cannot be measured directly by simple spirometry?

A. Tidal volume
B. Residual volume
C. Expiratory reserve volume
D. Vital capacity

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Breathing and Exchange of Gases →

Frequently asked questions

Are these official NEET 2021 Biology Breathing and Exchange of Gases PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2021 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.