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Topic Semiconductors
Asked 10 times across 5 UPSC exams over 42 years (1984–2026), peaking in 2023.
Key insights
- Most tested in CDS — 3 of 10 PYQs
- Most asked in 2023
- Recurs across 7 years (1984–2026)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1984 → CDS 2016 → NDA 2021 → GEO 2023 → ESE 2026
How the concept evolved
Rising — more than half its appearances (8 of 10) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
ESE2026
Which state is home to India's first Silicon Carbide (SiC) semiconductor manufacturing plant ?
- A Odisha
- B Jharkhand
- C Bihar
- D Haryana
Answer key not yet available (pending official release)
Science & Technology › Emerging Tech
NDA2023
Which one of the following graphs correctly represents the current (I) - voltage (V) variation for a rectangular piece of a semiconductor wafer ?
- A (a) ✓
- B (b)
- C (c)
- D (d)
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
GEO2023
Which one of the following schematic graphs correctly represents qualitatively the variation of resistivity ρ with respect to temperature T for a semiconductor?
- A graph (a)
- B graph (b)
- C graph (c)
- D graph (d) ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
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