1 g of a steam at 100°C melt how much ice at 0°C? (Latent h…

Physics Thermometry, Thermal Expansion and Calorimetry Calorimetry Single Correct MCQ

Published on: September 12, 2026

1 g of a steam at 100°C melt how much ice at 0°C? (Latent heat of ice = 80 cal/gm and latent heat of steam = 540 cal/gm)

1 gm

2 gm

4 gm

8 gm

Text Solution

Verified by Experts

The correct answer is:

Suppose m gm ice melted, then heat required for its melting $= mL = m \times 80 \text{ cal}$

Heat available with steam for being condensed and then brought to 0°C

$= 1 \times 540 + 1 \times 1 \times (100 - 0) = 640 \text{ cal}$

⇒ ⇒ Heat lost = Heat taken

⇒ ⇒ $640 = m \times 80$ ⇒ ⇒ $m = 8 \, g$

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