Calorie is defined as the amount of heat required to raise temperature of 1 g of water by `1^@C` and it is defined under which of the following conditions?

Options

A. From `14.5^@C` to `15.5^@C` at 760 mm of Hg
B. From `98.5^@C` to `99.5^@C` at 760 mm of Hg
C. From `13.5^@C` to `14.5^@C` at 76 mm of Hg
D. From `3.5^@C` to `4.5^@C` at 76 mm of Hg

Answer

A

Explanation

One calorie is the heat required to raise the temperature of `1g` of water from `14.5^(@)C` to `15.5^(@)C` at `760mm` of `hg` .