The radioisotope used to study the thyroid gland is__________________?

Related Mcqs:

1. The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be _____________ percent?

   A. 3.125
   B. 6.25
   C. 12.50
   D. 25

2. If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be ____________ days?

   A. 5
   B. 10
   C. 20
   D. 30

3. The ratio of volume of an atom to that of its nucleus is__________________?

   A. 1012
   B. 10-12
   C. 10-8
   D. 108

4. Nuclear fuel usually used in a Boiling Water Reactor (BWR) is__________________?

   A. Plutonium
   B. Enriched uranium
   C. Natural uranium
   D. Thorium

5. Unit of radioactivity is__________________?

   A. Barn
   B. Fermi
   C. Angstrom
   D. Curie

6. In the nuclear reaction, 93N239→ 94Pu239 + ?; the missing particle is a/an__________________?

   A. Electron
   B. Proton
   C. Neutron
   D. Position

7. A fast breeder reactor____________________?

   A. Uses natural uranium as fuel
   B. Does not require a moderator
   C. Both A. and B.
   D. Neither A. nor B.

8. A moderator _____________ the neutrons?

   A. Slows down
   B. Absorbs
   C. Accelerates
   D. Reflects

9. Which is the most commonly used molten metal for cooling of nuclear reactors ?

   A. Calcium
   B. Sodium
   C. Mercury
   D. Zinc

10. The mass number of an element is not changed, when it emits _______________ radiations?

    A. α & β
    B. β & γ
    C. γ & α
    D. α, β, & γ