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The change from solid sate to vapour sta...

The change from solid sate to vapour state without passing through the liquid state is called………

A

Fusion

B

Regulation

C

vaporation

D

sublimation

Text Solution

Verified by Experts

The correct Answer is:
D
The change from solid state to vapour state without passing through the liquid state is called sublimation and the substance is said to sublime e.g.dry ice (solid `CO_(2)`), iodine etc.
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Knowledge Check

  • The conversion of a solid into vapours without passing through the liquid state is called :

    A
    vaporisation
    B
    fusion
    C
    sublimation
    D
    freezing

  • Assertion : In sublimation, a substance changes directly from solid to vapour without passing through liquid state and vice-versa. Reason : Distillation involves two processes i.e., vapourisation and condensation.

    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.

  • The process of sublimation is used to separate those solids from their mixture which directly pass to vapour state upon heating without passing through the liquid state and the vapours on cooling give back the solid again. "Solid" overset("heat")hArr "Vapours" The mixture is taken in a China dish and is covered by a glass funnel and heated to separate the sublimate. Which of the following undergoes sublimation?

    A
    Iodine
    B
    Chlorine
    C
    Sulphur
    D
    Iron

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