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When an oject is heated, the molecules t...

When an oject is heated, the molecules that make up the object

A

begin to move faster

B

loose energy

C

become heavier

D

become lighter

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Knowledge Check

  • When washing soda is heated:

    A
    `CO_(2)` is liberated
    B
    CO is released
    C
    `CO + CO_(2)` are released
    D
    water vapour is released

  • When an object is thrown up, the force of gravity:

    A
    is opposite to the direction of motion
    B
    is in the same direction as direction of motion
    C
    decreases as it rises up
    D
    increases as it rises up

  • When an object is at rest on the inclined rough surface,

    A
    static and kinetic frictions acting on the object is zero
    B
    static friction is zero but kinetic friction is not zero
    C
    static friction is not zero and kinetic friction is zero
    D
    static and kinetic frictions are not zero

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    When we heat an object, it expands. Is work done by the object in this process? Is heat given to the object equal to the increase in its internal energy?

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