Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
22320 cal of heat is supplied to 100 g of ice at $0^{\circ} \mathrm{C}$. If the latent heat of fusion of ice is 80 cal $\mathrm{g}^{-1}$ and latent heat of vaporization of water is 540 cal $\mathrm{g}^{-1},$ the final amount of water thus obtained and its temperature respectively
are
PhysicsThermal Properties of MatterWBJEEWBJEE 2012
Options:
  • A $8 \mathrm{g}, 100^{\circ} \mathrm{C}$
  • B $100 \mathrm{g} ,90^{\circ} \mathrm{C}$
  • C $92 \mathrm{g}, 100^{\circ} \mathrm{C}$
  • D $82 \mathrm{g}, 100^{\circ} \mathrm{C}$
Solution:
2040 Upvotes Verified Answer
The correct answer is: $8 \mathrm{g}, 100^{\circ} \mathrm{C}$
Heat required to convert ice to water at $100^{\circ} \mathrm{C}$
$$
Q=m \times L+m s \Delta T=18000 \mathrm{cal}
$$
Amount of heat left $=4320 \mathrm{cal}$
$$
\begin{array}{l}
m \times L=4320 \\
m=8 g \text { steam }
\end{array}
$$

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.