NEET 2004 · Class 12

Microbes in Human Welfare

A major component of gobar gas is

  1. (A)ammonia
  2. (B)methane
  3. (C)ethane
  4. (D)butane

The NCERT line that answers it

Verbatim line

Biogas is a mixture of gases (containing predominantly methane) produced by the microbial activity and which may be used as fuel.

Chapter
Microbes in Human Welfare
Section
8.4 MICROBES IN PRODUCTION OF BIOGAS
Page
6
Words matched
47 of 47

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 biogas (which includes gobar gas) contains predominantly methane, directly answering the MCQ about the major component of gobar gas.

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.

Question text is reproduced from the published NEET 2004 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.