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Assertion: The time of vulcanisation and...

Assertion: The time of vulcanisation and temperature is increased by adding accelerators.
Reason: By vulcanising, a material of high tensile strength can be obtained

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 reason 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

Text Solution

Verified by Experts

The correct Answer is:
D
The time of vulcanisation is reduced by adding accelerators and activators.
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Knowledge Check

  • Assertion : A gas can be liquified at any temperature by increase of pressure alone. Reason : On increasing pressure the temperature of gas decreases

    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

  • Assertion : In vulcanisation of rubber , sulphur cross links are introduced. Reason : Vulcanisation is a free radical intiated chain reaction.

    A
    Both assertion and reason correct and the reason is correct expansion to assertion.
    B
    Both assertion and reason are correct but reason is not the correct expansion of assertion.
    C
    Assertion is correct but reason is wrong
    D
    Assertion is incorrect but reason is correct.

  • Assertion: In vulcanisation of rubber, sulphur cross links are introduced Reason: Vulcanisation is a free radical initiated chian reaction.

    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 reason is not the corret explanation of the assertion.
    C
    if assertion is true but reason is false
    D
    if the assertion and reason both are false