Question

In a process, 10 g of ice at $-5^{o}C$ is converted into the steam at ${100}^{o}C$. If specific heat of water $1cal{g}^{-1}{}^o{C}^{-1}$; the heat required to raise the temperature of 10 g water from $0^{o}C$ to ${100}^{o}C$ is :

• A. $100cal$
• B. $1000cal$
• C. ${10}^{4}cal$
• D. ${10}^{5}cal$

Answer 1

The correct option is B $1000cal$

Heat required to rise the temperature of water from $0^{o}C$ to ${100}^{o}C$.

$Q=m.C.\Delta t$

$=\left(10g\right)\left(1cal{g}^{-1}{}^o{C}^{-1}\right)\left({100}^{o}C\right)$

$=1000cal$

Hence (B) is the correct.