Heat

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Heat

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(1) The amount of heat energy required to raise the temperature of a unit mass of an object by 1 degree C is called

2 points

(a) Specific Work capacity

(b) Specific Heat capacity

(d) None of the above

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(2) The degree of hotness or coldness of a body is called _________

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(a) Heat

(b) Temperature

(d) Energy

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(3) Heat is measured in which unit

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(a) Joule

(b) Hertz

(d) Hertz/secoond

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4) The amount of heat energy absorbed at constant temperature by unit mass of a solid to convert into liquid phase

2 points

a) Latent heat

(b)specific latent heat of fusion

(d) Calorie

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(5) How much heat energy is necessary to raise the temperature of 5 kg of water from 30 degree C to 100 degree C.

2 points

(a) 400 kcal

(b) 350 kcal

(d) 380 kcal

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(6) The boiling point of water is

2 points

(a) 373 K

(b) 32ᵒ C

(d) 32ᵒ F

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(7) The unusual behavior of water between …………..is called the anomalous expansion of water.

2 points

(a) 1ᵒ C to 10ᵒ C

(b) 0ᵒ C to 8ᵒ C

(d) 32ᵒ C to 48ᵒ C

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8) The amount of heat energy absorbed at constant temperature by unit mass of a liquid to convert into gaseous phase is called

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(a) Latent heart of Vaporization

(b) Latent heart of Fusion

(d) Latent heart of Fission

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9) The anomalous behavior of water can be studied with ----- apparatus.

2 points

A) Thermometer

(B) Calorimeter

(D) Hope’s apparatus

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10) Principle of heat exchange is

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(a) Heat energy lost by the hot object is greater than Heat energy gained by the cold object

(b) Heat energy lost by the hot object is less than Heat energy gained by the cold object

(d) None of these

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