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Total Questions: 5
1. A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as
Correct Answer is : Latent heat of fusion
2. A constant pressure air thermometer gave a reading of 47.5 units of volume, when immersed in ice-cold water, and 67 units in a boiling liquid. The boiling point of the liquid is
Correct Answer is : 112°C
3. The bulb of one thermometer is spherical, while that of other is cylindrical. If both of them have an equal amount of mercury, which one will respond quickly to the temperature?
Correct Answer is : Cylindrical
4. A black body at a high temperature T K radiates energy at the rate of E Wm-2. When the temperature falls to T/2 K, the radiated energy will be
Correct Answer is : E/16
5. On increasing the temperature of a substance gradually, its colour becomes
Correct Answer is : Yellow
