One Calorie Is equivalent to:

Correct answer: A. 4.184J

  • A. 4.184J
  • B. 4.184 kJ
  • C. 0.4184J
  • D. 0.4184kJ

Explanation

Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is equal to approximately 4.2 joules.

This question appeared on the NUMS 2022 paper, which you can sit online with every answer explained.

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