Question

If there is no heat losses, the heat released by the condensation of x grams of steam at ${100}^{\circ }$ into water at ${100}^{\circ }$ converts y grams of ice at 0°C into water at ${100}^{\circ }$. The ratio $\frac{y}{x}$ is

• A. 1 : 1
• B. 2 : 1
• C. 3 : 1
• D. 4 : 1

Answer 1

The correct option is C 3 : 1

Heat released by x gm steam when it condenses into water at ${100}^{\circ }C=x\times 540cal$
Heat required to convert y gm ice at $0^{\circ }C$ into water at ${100}^{\circ }C$
$=y\times 80+y\times 1(100-0)$
$\frac{y}{x}=\frac{3}{1}$