One calorie of heat energy is equivalent to approximately ______ joules of mechanical Energy .

Options

A. `0.24`
B. `0.48`
C. `4.2`
D. `2.4`

Answer

C

Explanation

1 calorie of heat energy is approximately equal to 4.2 Joules. 1 calorie is defined as the amount of heat required at a of 1 standard atmospheric pressure to raise the temperature of 1 gram of water by `1^(@)` centigrade.