Advertisements
Advertisements
प्रश्न
Water property of water makes it an effective coolant?
Advertisements
उत्तर
By allowing water to flow in pipes around the heated parts of a machine, heat energy from such part is removed. Water in pipes extracts more heat from surrounding without much rise in its temperature because of its large specific heat capacity. So, Water is used as an effective coolant.
संबंधित प्रश्न
Calculate the mass of ice required to lower the temperature of 300 g of water 40°C to water at 0°C.
(Specific latent heat of ice = 336 J/g, the Specific heat capacity of water = 4.2J/g°C)
Water is used in hot water bottles for fomentation. Give a reason.
How will global warming disturb the ecological balance?
What is meant by specific heat capacity?
Figure shows a paddle wheel coupled to a mass of 12 kg through fixed frictionless pulleys. The paddle is immersed in a liquid of heat capacity 4200 J K−1 kept in an adiabatic container. Consider a time interval in which the 12 kg block falls slowly through 70 cm. (a) How much heat is given to the liquid? (b) How much work is done on the liquid? (c) Calculate the rise in the temperature of the liquid neglecting the heat capacity of the container and the paddle.

Water boils at 120 °C in a pressure cooker. Explain the reason.
From the options given below the specific heat of _______ is maximum.
All metals have the same specific heat capacity.
J/Kg °C is the unit of specific heat capacity.
Prove the Mayer's relation `C_p - C _v = R/J`
