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Topic Electrical conductivity
Asked 3 times in CDS over 7 years (2014–2021), peaking in 2021.
Key insights
- Most tested in CDS — 3 of 3 PYQs
- Most asked in 2021
- Recurs across 2 years (2014–2021)
Across exams
CDS · 3How the concept evolved
Rising — more than half its appearances (2 of 3) 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.
CDS2021
Which of the following carbon allotropes is/are good conductor(s) of electricity?
- Diamond
- Graphite
- Fullerene
Select the correct answer using the code given below:
- A 1 only
- B 1 and 2 only
- C 2 only ✓
- D 1 and 3 only
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CDS2021
Which one of the following is an electric conductor?
- A A plastic sheet
- B Distilled water
- C Human body ✓
- D A wooden thin sheet
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CDS2014
The form of carbon known as graphite
- A is harder than diamond
- B contains a higher percentage of carbon than diamond
- C is better electrical conductor than diamond ✓
- D has equal carbon-to-carbon distances in all directions
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
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