JKSSB Mock Tests

Which among the following correctly explains why people with O negative blood are considered universal donors

A. Their RBCs lack both A and B antigens and the Rh factor
B. Their plasma lacks antibodies against A and B antigens
C. They possess both A and B antigens on the surface of their erythrocytes
D. The Rh factor in their blood neutralizes any recipient antibodies
Answer: Option A
Solution (By JKSSB Mock Tests Team)
O negative blood has no A, B, or Rh antigens, so it does not trigger an immune response in the recipient.
This Question Belongs to: General science Biology set 1
Previous Next

Target SSC, Railway, UPSC & JKSSB Exams

Welcome to JKSSB Mock Tests's comprehensive question bank. Practicing objective multiple-choice questions (MCQs) on topics like Biology set 1 is essential for clearing high-competition exams such as SSC CGL, CHSL, Railway RRB NTPC, UPSC Prelims, and JKSSB.

The solution provided above gives you the exact logical breakdown needed to handle similar queries in the actual exam environment. To maximize your score, we recommend solving the related questions provided on this page and taking our free randomized mock tests to evaluate your time management skills.

Frequently Asked Questions

Yes, the concepts covered in General science are highly relevant and repeatedly asked in SSC (CGL, MTS, CHSL), Railway (RRB NTPC, ALP), UPSC, and state PSC exams like JKSSB.

After reading the direct solution, try to understand the core concept behind it. Use our platform to practice similar questions from the same topic to reinforce your memory and improve accuracy.