NEET 2024 Re · Class 12

Biotechnology: Principles and Processes

Identify the incorrect statement related to gel electrophoresis.

  1. (A)Separated DNA fragments can be directly seen under UV radiation
  2. (B)Separated DNA can be extracted from gel piece
  3. (C)Fragment of DNA moves toward anode
  4. (D)Sieving effect of agarose gel helps in separation of DNA fragments

The NCERT line that answers it

Concept-grounded

DNA is a negatively charged molecule, hence it moves towards the positive electrode (anode) (Figure 9.3).

Chapter
Biotechnology: Principles and Processes
Section
9.3.2 Cutting of DNA at Specific Locations

The answer is taught in this NCERT section but is not one quotable sentence. It needs combining facts or applying the idea.

How this line gives the answer

Claim discrepancy: claimed A, GPT says C. Matched with override at hybrid rank 1.

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 2024 Re 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.