Assertion : ${ }^{94} \mathrm{Sr}$ from the radioactive fall out from a nuclear bomb ends up in the bones of human beings through the milk consumed by them. It causes impairment of the production of red blood cells. Reason : The energetics $\beta$-particles emitted in the decay of ${ }^{94} \mathrm{Sr}$ damage the bone marrow.

Question

Assertion : ${ }^{94} \mathrm{Sr}$ from the radioactive fall out from a nuclear bomb ends up in the bones of human beings through the milk consumed by them. It causes impairment of the production of red blood cells. Reason : The energetics $\beta$-particles emitted in the decay of ${ }^{94} \mathrm{Sr}$ damage the bone marrow., If both assertion and reason are true and reason is the correct explanation of assertion, If both assertion and reason are true but reason is not the correct explanation of assertion, If assertion is true but reason is false, If both assertion and reason are false.

MARKS App · Accepted Answer

${ }^{94} \mathrm{Sr}$ from ${ }^{235} \mathrm{U}$ fission is absorbed through milk. Their emission of $\beta^{-}$particles will damage the bone-marrow as $\mathrm{Sr}$ is absorbed in bones.

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