Multiple choice

The S.I. unit of heat is _______.

  1. Calorie

  2. Joule

  3. Celsius

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The SI unit of heat is Joule (J), named after James Prescott Joule. While calorie is a common unit for heat energy (1 calorie ≈ 4.18 J), it is not an SI unit. Celsius is a unit of temperature, not heat energy.

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