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Topic Immune system
Asked 3 times across 3 UPSC exams over 6 years (2016–2022), peaking in 2022.
Key insights
- Most tested in CSE — 1 of 3 PYQs
- First appeared in CDS 2016 — 6 years before CSE 2022 (allied exams preview CSE)
- Most asked in 2022
- Recurs across 3 years (2016–2022)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CDS 2016 → GEO 2021 → CSE 2022
How the concept evolved
Rising — more than half its appearances (3 of 3) are since 2016.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE2022
Which one of the following statements best describes the role of B cells and T cells in the human body?
- A They protect the body from environmental allergens.
- B They alleviate the body's pain and inflammation.
- C They act as immunosuppressants in the body.
- D They protect the body from the diseases caused by pathogens. ✓
✓ Correct answer: (D)
Science & Technology › Biology & Health
GEO2021
Which one of the following statements about immunisation is correct?
- A In immunisation, infectious agent is killed directly by component of vaccine
- B In immunisation, infectious agent is killed through immune system
- C Immunisation has no role in preventing infectious diseases
- D Immunisation against one infectious disease is sufficient for all infectious diseases
Answer key not yet available (pending official release)
Science & Technology › Biology & Health
CDS2016
The HIV virus weakens the immunity of a person because it destroys
- A mast cells
- B platelets
- C erythrocytes
- D lymphocytes ✓
✓ Correct answer: (D)
Science & Technology › Biology & Health
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