Question

Which of the following damages WBC bone-marrow and lymph nodes?

• A. I${}^{131}$
• B. Ca
• C. Cesium
• D. Strontium

Answer 1

Answer: (A)

I${}^{131}$

A. I¹³¹ is radioactive iodine which gets incorporated in thyroid gland and damages the white blood cells (WBCs), bone marrow, lymph nodes and can cause cancer.

B. Calcium is a important mineral in body. It is a component of bones, acts as cofactor for many enzymes etc.

C. Cesium can displace potassium from the body and also causes epileptic seizures.

D. Strontium enters the bones and causes bone cancer.

So, the correct answer is 'I¹³¹'.