ICSE Class 10 Heat — Mock Test (2027)

Free online mock test for Heat (ICSE Class 10 Physics) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.Which of the two contains more heat: 1 g of ice at 0°C or 1 g of water at 0°C?
   • A.1 g of ice at 0°C, because it can absorb heat to melt.
   • B.1 g of water at 0°C, because it has already absorbed latent heat of fusion.
   • C.Both contain the same heat since they are at the same temperature.
   • D.Neither contains heat, as heat is only present during phase change.
2. 2.Which of the following methods can be used to make a given quantity of liquid evaporate more quickly, other than direct heating?
   • A.Decrease the surface area of the liquid and increase the pressure on its surface.
   • B.Increase the surface area of the liquid and blow air over its surface.
   • C.Stir the liquid vigorously to increase its temperature.
   • D.Cover the liquid to prevent heat loss to the surroundings.
3. 3.200 g of ice at 0°C converts into water at 0°C in 1 minute when heat is supplied to it at a constant rate. In how much time will 200 g of water at 0°C change to 20°C? Take specific latent heat of ice = 336 J g⁻¹.
4. 4.Why are steam pipes more effective than hot water pipes for warming buildings in cold countries?
   • A.Steam pipes release more latent heat during condensation than hot water pipes.
   • B.Steam pipes transfer heat faster due to higher thermal conductivity.
   • C.Hot water pipes lose heat quickly through radiation, reducing efficiency.
   • D.Steam pipes operate at higher pressures, increasing heat output.
5. 5.In a temperature-time graph, part BC represents the change of state of a substance from solid to liquid at 80°C on absorbing heat Q = 1600 J - 800 J = 800 J. If 0.02 kg of the substance is involved, what is the latent heat of fusion of the substance?
   • A.20000 J kg⁻¹
   • B.40000 J kg⁻¹
   • C.80000 J kg⁻¹
   • D.4000 J kg⁻¹