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.A vessel from which the air is rapidly being pumped out contains 100 g of water at 0°C. The intensive evaporation causes a gradual freezing of the water. What part of the original water can be converted into ice by this method?
   • A.60%
   • B.78%
   • C.86.2%
   • D.56%
2. 2.Water is used in hot water bottles for fomentation. Why is water preferred for this purpose?
   • A.Water has a high specific heat capacity, allowing it to retain heat for a longer time.
   • B.Water boils at a low temperature, making it easy to heat quickly.
   • C.Water is a poor conductor of heat, preventing rapid heat loss.
   • D.Water evaporates slowly, ensuring it stays in the bottle longer.
3. 3.How can you reduce the heat loss due to conduction and convection in a calorimeter?
   • A.Place the calorimeter in a vacuum-sealed container to eliminate air.
   • B.Surround the calorimeter with insulating materials like cotton or wool in a larger container.
   • C.Paint the calorimeter black to absorb more heat.
   • D.Increase the surface area of the calorimeter to dissipate heat faster.
4. 4.Find the result of mixing 10 g of ice at -10°C with 10 g of water at 10°C. Specific heat capacity of ice = 2·1 J g⁻¹ K⁻¹, specific latent heat of ice = 336 J g⁻¹ and specific heat capacity of water = 4·2 J g⁻¹ K⁻¹.
5. 5.A metal piece of mass 20 g is heated to a constant temperature of 100°C. Then it is added in a calorimeter of mass 50 g and specific heat capacity 0.42 J g⁻¹ K⁻¹, containing 50 g of water at 20°C. After stirring the water, the highest temperature recorded is 22°C. Calculate the specific heat capacity of metal. Specific heat capacity of water = 4.2 J g⁻¹ K⁻¹.