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When vapour condenses into liquid...

When vapour condenses into liquid

A

It absorbs heat

B

It liberates heat

C

Its temperature increases

D

Its temperature decreases

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • How is the vapour pressure of a liquid in a closed container affected when the quantity of liquid is doubled at constnat temperature?

    A
    The vapour pressure increases
    B
    The vapour pressure decreases.
    C
    The vapour pressure stays the same.
    D
    The vapour presure may increase or decrease depending on the liquid.

  • The vapour pressure of a liquid in a closed vessel

    A
    depandes upon the amount of the liquid taken s
    B
    Keeps on increasing continously as more and more liquid evaporates
    C
    has a constant value depending only on the nature of the liquid
    D
    had a constant value at constant temperature

  • The vapour pressure of a liquid depends upon

    A
    the amount on the liqiud taken
    B
    the temperature of ht liquid
    C
    both on the amount as well as temperature
    D
    neither the amount nor the temperature but only on the nature of the liquid

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    Vapour pressures of benzene and toluene in a mixute at 50^(@)C are given in mm by P=179 X_(B)+92 where X_(B) is the mole fraction of benzene. Calculate. (c) If the vapours are removed and condensed into liquid and again brought to the temperature of 50^(@)C , what would be the mole fraction of benzene in the vapour phase?

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    In very cold places, water vapour condenses to produce "_____"

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    Why vapour pressure of a liquid decreases when a non - volatile solute is added to it ?

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