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When a solid containing 10 N^@ molecules...

When a solid containing `10 N^@` molecules is allowed to melt, then 

A

Only one molecule of a solid melts

B

each individual molecule of a solid melts

C

bulk of the solid melts

D

No molecules melt

Text Solution

Verified by Experts

The correct Answer is:
C
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One litre glass bubl contains 2 xx 10^(21) molecules of nitrogen at a pressure of 7.57 xx 10^(-3)N.m^(-2) . Find out the RMS velocity of nitrogen.

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Knowledge Check

  • When a solid melts, there is

    A
    An increase in enthalpy
    B
    A decrease in enthalpy
    C
    No change in enthaply
    D
    A decrease in internal energy

  • When a solid melts, there is

    A
    An increase in enthalpy
    B
    A decrease in enthalpy
    C
    No change in enthalpy
    D
    A decrease in internal energy

  • The polydispersity index of a polymer containing 10 molecules with moleculer mass 1.0xx10^(4) and 10 molecules with moleculer mass 1.0xx10^(5) is approximately .

    A
    1.67
    B
    0.59
    C
    1.55
    D
    0.83

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