List of top Physics Questions on Calorimetry asked in ICSE Class X board

The given graph represents the cooling curve of a liquid.
(a) State the freezing temperature of the liquid.
(b) Name the phase change happening at the region QR.
(c) In which state (solid / liquid) does the above substance liberate heat at a faster rate? Justify.
(a) Atmospheric temperature after a hailstorm is greater than the temperature during the hailstorm. State True or False.
(b) Which thermal physical quantity of a frying pan changes by making the base heavier?
(c) State the principle of Calorimetry.
A metal piece of thermal capacity 40 JK\(^{-1}\), absorbs 800 J of heat. Calculate the rise in the temperature of this metal piece.
Three substances A, B and C of same mass are present at their respective melting points. On heating, if they melt completely in 5 minutes, 7 minutes and 3 minutes respectively, then which substance has the highest specific latent heat? (Assume heat is absorbed at the same rate)