Assertion :During $β$ -decay, a new element with atomic number greater than one is obtained. Reason: Protons and neutrons keep on changing into one another with the help of meson.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Both the statements are correct:
$_{1}^{0} β$ changes atomic number
$p + ν_{e} \to n + e^{+}$ so a meson is involved
But the reason does not justify the assertion so option B is correct

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Choose the correct option.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Assertion :During β-decay, a new element with atomic number greater than one is obtained. Reason: Protons and neutrons keep on changing into one another with the help of meson.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for AssertionBoth the statements are correct:01β changes atomic number p+νe→n+e+ so a meson is involved But the reason does not justify the assertion so option B is correct

Assertion :During $β$ -decay, a new element with atomic number greater than one is obtained. Reason: Protons and neutrons keep on changing into one another with the help of meson.