NEET 2023 · Class 11

Biomolecules

Cellulose does not form blue colour with Iodine because

  1. (A)It is a helical molecule
  2. (B)It does not contain complex helices and hence cannot hold iodine molecules
  3. (C)It breaks down when iodine reacts with it
  4. (D)It is a disaccharide

The NCERT line that answers it

Verbatim line

Cellulose does not contain complex helices and hence cannot hold $I_2$ .

Chapter
Biomolecules
Section
9.5 POLYSACCHARIDES
Page
6
Words matched
10 of 11

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span directly states 'Cellulose does not contain complex helices and hence cannot hold I₂', which matches option B exactly and distinguishes it from the other options.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

Take the free 5-minute checkMore from this chapter

Question text is reproduced from the published NEET 2023 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.