ICSE-2019

A liquid X has the maximum specific heat capacity and is used as a coolant in car radiators. Name the liquid X.

A solid metal weighing $150 \mathrm{g}$ melts at its melting point of $800 °\mathrm{C}$ by providing heat at the rate of $100 \mathrm{W}$. The time taken for it to completely melt at the same temperature is $4 \min$. What is the specific latent heat of fusion of the metal?

Why does stone lying in the sun get heated up much more than water lying for the same duration of time?

Two metallic blocks P and Q having masses in ratio $2:1$ are supplied with the same amount of heat. If their temperatures rise by the same degree, compare their specific heat capacities.

Define heat capacity of a substance.

Write the SI unit of heat capacity.

What is the relationship between heat capacity and specific heat capacity of a substance?

A piece of ice of mass $60 \mathrm{g}$ is dropped into $140 \mathrm{g}$ of water at $50°\mathrm{C}$. Calculate the final temperature of water when all the ice has melted. (Assume no heat is lost to the surrounding) Specific heat capacity of water $=4.2 \mathrm{J} {\mathrm{g}}^{-1}{\mathrm{k}}^{-1}$ Specific latent heat of fusion of ice$=336 \mathrm{J} {\mathrm{g}}^{-1}$