Example 1 · difficulty 2/5
Compared with inspired atmospheric air, alveolar air has:
- A. more O₂ and less CO₂
- B. equal O₂ and CO₂
- C. less O₂ and more CO₂
- D. no nitrogen
2022 source guide · Biology
NEET 2022 Biology Breathing and Exchange of Gases Questions
Use this page to connect the official 2022 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.
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 2 · difficulty 2/5
A thinner respiratory membrane causes diffusion rate to:
- A. decrease
- B. become zero
- C. depend only on haemoglobin
- D. increase
Example 3 · difficulty 2/5
In alveoli, PO₂ is higher than in deoxygenated blood, so O₂ diffuses:
- A. from alveoli into blood
- B. from blood into alveoli
- C. from alveoli into pleural fluid only
- D. nowhere
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
Frequently asked questions
Are these official NEET 2022 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 2022 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.