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The point on the pressure temperature ph...

The point on the pressure temperature phase diagram where all the phases co-exist is called

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The correct Answer is:
triple point
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The pressure -temperature (P-T) phase diagram shown below corresponds to the a. Curve of fusion of solids that expand on solidification. b. Curve of sublimation of solides that directly go over to the vapour phase.

Knowledge Check

  • Assertion : In pressure-temperature (P-T) phase diagram of water, the slope of the melting curve is found to be negative. Reason : Ice contracts on melting to water.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false
    D
    If both assertion and reason are false

  • Water ice exists in several different form depending on the pressure and temperature. A proton of the phase diagram for ice I, ice III and liquid water is shown below. Which statement about the densities of these three phases is correct ?

    A
    The density of liquid water is greater than the densities of either ice I or ice III.
    B
    The density of ice I is greater than the densities of either ice III or liquid water.
    C
    The density of ice III is greater than the densities of either ice I or liquid water
    D
    The densities of ice I and ice III are equal and greater than the density of liquid water.

  • Assertion : In pressure-temperature ( P - T ) phase diagram of water, the slope of the melting curve is found to be negative. Reason : Ice contracts on melting to water

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but re ason is not the correct explanation of the assertion
    C
    If assertion is true but reason is false.
    D
    If the assertion and reason both are false

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    The temperature at which a substance coexists in all three phases in equilibrium is called

    The temperature at which a substance coexists in all three phases in equilibrium is called

    Interphase is called the resting phase because

    The phase between the two successive M phase is called as

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