The latent heat of vapourization of water is ………………..
A) 100° C
B) 80 cal/gm
C) 540 cal/gm
D) 373 K
1 Answers
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Write a note on latent heat of substance.
1. Latent heat of a substance is the quantity of heat required to change the state of unit mass of the substance without changing its temperature. 2. Mathematically, if mass m...
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Explain the following terms. (i) Latent heat of fusion (ii) Latent heat of vaporisation
1. Latent heat of fusion: The quantity of heat required to convert unit mass of a substance from its solid state to the liquid state, at its melting point, without any...
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Explain why latent heat of vaporisation is much larger than latent heat of fusion.
1. The energy required to completely separate the molecules or atoms in liquids is greater than the energy needed to break the rigidity (rigid bonds between the molecules or atoms)...
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Calculate the amount of heat energy to be supplied to convert 2 kg of ice at 0 °C completely into water at 0 °C if latent heat of fusion
Mass (m) = 2 kg = 2 × 103 g. latent heat of fusion for ice (L) = 80 cal/g. To find: Heat energy (Q) Formula: Q = mL From formula, Q = 2 × 103 ×...
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The latent heat of vapourization of liquid of “m”gm when the heat energy of “Q” calories is supplied to change its state from liquid to gas is ………………
Q = mL so, L = Q/m. Hence, the correct option is (B) Q/m
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The latent heat of vapourization of liquid of “m”gm when the heat energy of “Q” calories is supplied to change its state from liquid to gas is ………………
2 Answers
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C.G.S unit of latent heat of vapourization is ……………….
Correct option is A) cal/gm
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C.G.S unit of latent heat of vapourization is ……………….
2 Answers
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S.I unit of latent heat of vapourization is ………………………
Correct option is B) J/Kg
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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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