NEET 2012 · Class 11

Body Fluids and Circulation

A certain road accident patient with unknown blood group needs immediate blood transfusion. His doctor friend at once offers his blood. What was the blood group of the donor?

  1. (A)Blood group B
  2. (B)Blood group AB
  3. (C)Blood group O
  4. (D)Blood group A

The NCERT line that answers it

Verbatim line

From the above mentioned table it is evident that group 'O' blood can be donated to persons with any other blood group and hence 'O' group individuals are called 'universal donors'.

Chapter
Body Fluids and Circulation
Section
15.1.3 Blood Groups
Page
2
Words matched
31 of 31

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

How this line gives the answer

5, emb=1.0, combined=0.8). Verified: high — The span explicitly states that group 'O' blood can be donated to persons with any other blood group, which directly justifies why a doctor with blood group O could safely donate to a patient with unknown blood group in an emergency.

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 2012 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.