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Assertion : A change in the temperature ...

Assertion : A change in the temperature of a body cause change in dimentions.
Reason : The dimentions of a body decrease due to the increase in its temperature.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason is not the correct explanation of assertion.

C

If assertion is true and reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Substance expand on heating and contract on cooling.
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Knowledge Check

  • The change in temperature of a body is 50^(ul@)C .The change on kelvin scale is

    A
    50 K
    B
    60 K
    C
    70 K
    D
    323 K

  • The change in temperature of a body is 50^(@)C . The change on the Kelvin scale is

    A
    `50K`
    B
    `323K`
    C
    `70K`
    D
    `30K`

  • Assertion (A) : Rate of reaction will be doubled, when temperature increased from 298 k to 308 k. Reason (R ): The activation energy of reaction decreases with increase in temperature.

    A
    Both (A ) and (R) are true (R ) is the correct explanation to (A)
    B
    Both (A) and (R ) are true but (R) is not the correct explanation to (A)
    C
    (A)is true but (R) is false
    D
    Both (A) and (R) are false

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