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A substance is incompressible even when...

A substance is incompressible even when it is subjected to very high pressure . What is the pysical state of the substance ?

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The given graph shows the heating curve for a pure substance. The temperature rises with time as the substance is heated : (a) What is the physical state of the substance at the points A, B, C and D ? What is the melting point of the substance ? (c ) What is its boiling point ? (d) What happens to the temperature while the substance is changing state ? (e ) The substance is not water. How can you judge from the graph ?

Define gaseous state of a substance.

Knowledge Check

  • The physical state of a substance can be changed by

    A
    decreasing its temperature.
    B
    removing heat energy from the substance.
    C
    giving heat energy to the substance.
    D
    Both (b) and (c)

  • The physical state of a substance can be changed by

    A
    decreasing its temperature
    B
    removing heat energy from the substane
    C
    giving heat energy to the substacne
    D
    both b and c

  • The vapour pressure of water at 20^(@)C is 17.54mm . When 20g of non - ionic substance is dissolved in 100g of water, the vapour pressure is lowered by 0.30mm . What is the molecular mass of the substance ?

    A
    `200.8`
    B
    `206.88`
    C
    `210.5`
    D
    `215.2`

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    The vapour pressure of water at 20^(@)C is 17.54 mm. When 20g of non-ionic, substance is dissolved in 100 g of water, the vapour pressure is lowered by 0.30mm. What is the molecular weight of the substance ?

    The vapour pressure of water at 20^(@)C is 17.54 mm. When 20 g of a non-ionic substance is dissolved in 100g of water, the vapour pressure is lowered by 0.30 mm . What is the molecular weight of the substances

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