Multiple choice general knowledge science & technology

Liquid metal having highest thermal conductivity is

  1. a)sodium

  2. b)potassium

  3. c)lead

  4. d)mercury

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A Correct answer
Explanation

Sodium has the highest thermal conductivity among liquid metals at approximately 142 W/(m·K), which is why it's used as a coolant in nuclear reactors. Mercury has relatively low thermal conductivity (~8.3 W/(m·K)), and both potassium and lead are also lower than sodium.

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