Question:medium

One calorie (cal) equals to how many joules (J)?

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Remember 1 cal = 4.18 J as a standard conversion factor in thermodynamics.
Updated On: Feb 11, 2026
  • 2.18
  • 4.18
  • 6.18
  • 7.18
Show Solution

The Correct Option is B

Solution and Explanation

1 calorie equals 4.18 joules. It represents the energy needed to increase the temperature of 1 gram of water by 1°C.

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