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.How much heat energy is required to melt 5 kg of ice? Specific latent heat of ice = 336 J g⁻¹.
2. 2.Why do wet clothes dry quicker in the sun than in the shade?
   • A.Sunlight chemically breaks down water molecules in the clothes.
   • B.Evaporation is faster in the sun due to higher temperature.
   • C.The sun’s rays directly absorb water from the clothes.
   • D.Wet clothes lose water faster in the shade due to lower humidity.
3. 3.$40 \mathrm{g}$ of water at $60^{\circ}\mathrm{C}$ is poured into a vessel containing $50 \mathrm{g}$ of water at $20^{\circ}\mathrm{C}$. The final temperature recorded is $30^{\circ}\mathrm{C}$. Calculate the thermal capacity of the vessel. (Take specific heat capacity of water as $4.2 \mathrm{J \, g^{-1} \, ^{\circ}C^{-1}}$).
4. 4.Why is water used as an effective coolant in car radiators?
   • A.Water has a high specific heat capacity, allowing it to absorb large amounts of heat without a significant temperature rise.
   • B.Water is inexpensive and easily available, making it a cost-effective choice for cooling systems.
   • C.Water boils at a low temperature, which helps in quickly dissipating heat from the engine.
   • D.Water has a low viscosity, enabling it to flow rapidly through the radiator and cool the engine faster.
5. 5.10 g of ice at 0°C absorbs 5460 J of heat energy to melt and change to water at 50°C. Calculate the specific latent heat of fusion of ice. Specific heat capacity of water is 4200 J kg⁻¹ K⁻¹.