(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Name the material of core in (a) an electric bell, (b) electromagnet, (c) a d.c. motor, (d) an a.c. generator and (e) a transformer.

Name the S.I. unit of heat.

Differentiate between heat capacity and specific heat capacity.

Name a liquid which has the highest specific heat capacity.

Write the approximate value of specific heat capacity of water in S.I. unit.

What do you mean by the following statement?

The heat capacity of a body is 50 JK^-1?

What do you mean by the following statement?

The specific heat capacity of copper is 0. 4 Jg^-1 K^-1?

Write the expression for the heat energy Q received by the substance when m kg of substance of specific heat capacity c Jkg^-1 k^-1 is heated through Δt° C.

Two metallic blocks P and Q of masses in ratio 2: 1 are given the same amount of heat. If their temperature rise by the same amount, compare their specific heat capacities.

Why do the farmers fill their fields with water on a cold winter night?

Discuss the role of high specific heat capacity of water with reference to climate in coastal areas.

Water is used in hot water bottles for fomentation. Give a reason.

Water property of water makes it an effective coolant?

Give one example where high specific heat capacity of water is used as cooling purposes?

Give one example where high specific heat capacity of water is used as heat reservoir ?

A mass m₁ of a substance of specific heat capacity c₁ at temperature t₁ is mixed with a mass m₂ of other substance of specific heat capacity c₂ at a lower temperature t₂. Deduce the expression for the temperature t of the mixture. State the assumption made, if any.

Describe a method to determine the specific heat capacity of a solid, like a piece of copper ?

In an experiment to determine the specific heat capacity of a solid following operations were
made:
Mass of calorimeter + stirrer = x kg
Mass of water = y kg
Initial temperature of water t1℃
Mass of solid = z kg
Temperature of solid = t2 ℃
Temperature of mixture = t ℃
Specific heat capacity of calorimeter and water are c1 and c2 respectively. Express the specific
heat capacity c of the solid in terms of the above data.

A heater of power P watt raises the temperature of m kg of a liquid by Δt K in time t s. Express
the specific heat capacity of liquid in terms of above data.

The S.I. unit of specific heat capacity is ______.