Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

(A)Serum and Urine analysis
(B)Polymerase Chain Reaction (PCR) technique
(C)Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
(D)Recombinant DNA Technology

The NCERT line that answers it

Verbatim line

Using conventional methods of diagnosis (serum and urine analysis, etc.) early detection is not possible.

Chapter: Biotechnology and its Applications
Section: 10.2.3 Molecular Diagnosis

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 explicitly states that serum and urine analysis (option A) does not serve the purpose of early diagnosis, while the full paragraph confirms that PCR, ELISA, and recombinant DNA technology do serve that purpose, directly distinguishing the correct answer from the wrong options.

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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.

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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.