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  9. Q216

RRB Technician (Grade I Signal + Grade III) 2026 · Question 216 of 265

The difference in electrical conductivity between diamond and graphite arises because:

  1. AGraphite has delocalized electrons; diamond does notCorrect
  2. BDiamond has metallic bonding, graphite does not
  3. CDiamond has tightly packed ions
  4. DBoth have free electrons, but in different numbers

Answer: A. Graphite has delocalized electrons; diamond does not

Official answer key verified. Detailed explanation coming soon.

Source: RRB Technician Grade III 10-Mar-2026 Shift 3 (oliveboard compilation with answer key) · reliable-secondary

← Q215View full paper (265 questions)Q217 →

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