01 The expected qualities of a refrigerant are:

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02 Which statement best explains why clothes dry faster on a windy day?

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03 Water kept in an earthen pot remains cool even in summer because…

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04 Heat is not directly related to:

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05 If the surface area is increased, what happens to the rate of…

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06 The principle that evaporation of a liquid absorbs heat is used in…

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07 Black and white vessels are placed in sunlight for one hour in…

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08 The conversion of a liquid into vapour at any temperature below its…

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09 On which of the following principles does a refrigerator work?

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10 Why are the exterior walls of houses painted white in hot climates?

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