When a solid changes to directly gaseous state, the process is called
A) Diffusion
B) Sublimation
C) Evaporation
D) Boiling
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The liquid phase changes to gaseous phase at a constant temperature at a given pressure is called ………………………..
Correct option is C) boiling
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The liquid phase changes to gaseous phase at a constant temperature at a given pressure is called ………………………..
2 Answers
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The process in which solid phase changes to liquid phase at a constant temperature is called
Correct option is B) melting
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The latent heat of fusion of a solid ‘ substance of mass “m” is L. The required amount of heat to change solid phase to liquid phase is ……………… cal.
Correct option is A) Q = mL
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The process in which the substance in liquid phase changes to solid phase is called ………………….
Correct option is C) freezing
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At this temperature water changes into gaseous state, (in Kelvin)
Correct option is B) 373
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“To reduce the friction we use solid, liquid and Gaseous state lubricants”. Which lubricant is used in Electric motor to reduce friction ?
Correct option is D) Grease
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_______ form of water is present in mountain and polar region. (a) Solid (b) Liquid (c) Gaseous (d) All these
Correct answer is (a) Solid
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The process by which a solid changes into a liquid is called
The process by which a solid change into a liquid is called melting.
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…………… is found in three states – solid, liquid and gaseous.
Correct option is (c) Water
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