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Radioactive nuclei emit beta^-1 particle...

Radioactive nuclei emit `beta^-1` particles.
Electrons exist inside the nucleus.

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 assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C
( c) Nuclear stability depends upon the ratio of neutron to proton. If the `n//p` ratio is more than the crictical value, then a neutron gets converted into a proton forming a `beta^-` particle in the process
`n rarr p + e^-`
The `beta^-` particle `(e^-)` is emitted form the nucleus in some radioactive transformation. So electrons do not exist in the nucleus but they result in some nuclear transformation.
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Knowledge Check

  • This section contains Assertion and Reason type questions. Each question has 4 choice (1), (2), (3) and (4), out of which only one is correct. Assertion (A) Radioactive nuclei emit beta -particles. Reason (R ) Electrons exist inside the nucleus.

    A
    Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion
    B
    Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
    C
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    D
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    A
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    B
    Isobars
    C
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    D
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    A
    if both assertion & reason are true and the reason is correct explanation of the assertion then mark (1)
    B
    if both assertion & reason are true and the reason is not correct explanation of the assertion then mark (2)
    C
    if assertion is true statement but reason is false then mark (3)
    D
    if both assertion & reason are false then mark (4)

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