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Part ACSIR NET December 2025cooling-curves-converge-to-one-asymptote-and-never-cross

Cooling curves converge to one asymptote and never cross

Two identical metal bars are heated to different temperatures and allowed to cool in the same surroundings. Which one of the following figures correctly shows their cooling curves?

  1. A.Figure A
  2. B.Figure B
  3. C.Figure C✓ Correct
  4. D.Figure D

You have the answer. Trap Analysis is why the other three were written.

Not a worked solution repeated four times — the specific reasoning error each wrong option was built to reward, and why this one tests execution slip.

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50 are analysed free — try those first.

The trap it tests

Execution slip

The idea was right. The computation was not.

Drill statements like this

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