2023 source guide · Chemistry

NEET 2023 Chemistry Biomolecules Questions

Use this page to connect the official 2023 paper with current Chemistry 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

carbohydrates, proteins, enzymes, vitamins and nucleic acids.

Original practice preview

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

Example 1 · difficulty 3/5

Which molecular process is responsible for the mutarotation of D-glucose in water?

A. Racemisation of D-glucose into L-glucose
B. Irreversible oxidation of the aldehyde group
C. Conversion of glucose into fructose only
D. Reversible ring opening followed by ring closure to either anomer

Example 2 · difficulty 2/5

What term is used for the pair α-D-glucose and β-D-glucose, which differ in configuration at C1?

A. Anomers
B. Enantiomers
C. Constitutional isomers
D. Identical molecules

Example 3 · difficulty 2/5

Which conversion described in NCERT is used commercially to obtain glucose from starch?

A. Heating starch with bromine water
B. Boiling starch with dilute sulfuric acid at 393 K under pressure
C. Treating starch with hydrogen in the presence of nickel
D. Heating starch with concentrated sulfuric acid to remove water

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

Biomolecules →

Frequently asked questions

Are these official NEET 2023 Chemistry Biomolecules 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 2023 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.