Radioactive decay of a material involves a _____________ order reaction?

Related Mcqs:

1. In β-decay of radioactive material, the ratio of neutron to proton____________________?

   A. Increases B. Remain same C. Decreases D. Is unpredictable; may increase or decrease...

2. Radioactive decay is a _____________ change?

   A. Chemical B. Nuclear C. Physical D. None of these...

3. A radioactive isotope undergoes decay with respect to time following _____________ law?

   A. Logarithmic B. Exponential C. Linear D. Inverse square...

4. Emission of β-particles during radioactive decay of a substance is from__________________?

   A. Innermost shell B. Nucleus C. Outermost shell D. None of these...

5. The new nucleus formed after β-decay of a radioactive element has___________________?

   A. Less atomic number B. Less atomic weight C. More atomic number D. More atomic weight...

6. The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then____________?

   A. 3/4th of it will disintegrate in two months B. It will completely disintegrate in two months C. It will completely disintegrate in four months D. 1/8th of it will remain intact at the end of four months...

7. The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be ______________ of its original weight?

   A. 1/2 B. 1/4 C. 1/8 D. 1/16...

8. The atomic number of a radioactive element is not changed, when it emits _____________ rays?

   A. α B. β C. γ D. α & β...

9. The decay product of tritium (a beta emitter) is_________________?

   A. Lithium B. Helium C. Deuterium D. Hydrogen...

10. Which of the following types of nuclear reactors is most prone to radioactive hazards ?

    A. Pressurised water reactor B. Gas cooled reactor C. Molten sodium cooled reactor D. Boiling water reactor...