Assertion: 90Sr 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 β-particles emitted in the decay of 90Sr damage the bone marrow.

Question

Assertion: 90Sr 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 β-particles emitted in the decay of 90Sr damage the bone marrow. (A) If both assertion arid 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 both assertion and reason are false.

Tardigrade Admin · Accepted Answer

38 Sr 90 decays to 39 Y 90 when β-rays emission is occurred. Sr gets absorbed in bones along with calcium which causes impairment of the production of red blood cells Now Sr 90 stackrelβ longrightarrow Y90 Sr decay to Yitrium. Sr 90 emits β-rays of very high energy. Bone marrow is damaged by these high energetic β-particles.

Q. Assertion : 90Sr 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 β-particles emitted in the decay of 90Sr damage the bone marrow.

If both assertion arid 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.