(A) 4 days
(B) 12 days
(C) 16 days
(D) 8 days
Answer: (D) 8 days
Q. The time required for a quantity to reduce to half of its initial value of a radioactive element is called:
(A) Half-life
(B) Divided-life
(C) Decreased-life
(D) None of these
Answer: (A) Half-life
Q. What is the half-life of Polonium-210?
(A) 138.376 days
(B) 148.376 days
(C) 158.376 days
(D) 168.376 days
Answer: (A) 138.376 days