Question

The amount of heat energy required to increase the temperature of 20 g of water by `1^(@)C` is ______.
A. 10 cal
B. 20 cal
C. 15 cal
D. 2 cal.

Answer 1

Correct Answer - B
Specific heat of water is 1 cal `g^(-1) .^(@)C`.
Amount of heat energy required is `20 xx 1` = 20 cal.
1 cal - 1 g
? - 20 g
= 20 cal