Multiple choice

Tea cools quickly in a

  1. metal cup

  2. porcelain cup

  3. glass cup

  4. clay cup
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Metal is an excellent thermal conductor due to free electrons that transfer heat rapidly. Porcelain, glass, and clay are thermal insulators with much lower thermal conductivity, so they retain heat longer. Tea cools fastest in the metal cup.

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