Radioactive isotope of Uranium used in Nuclear Bomb is ?

Related Mcqs:

1. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ?

   A. Chemical Reaction
   B. Nuclear reaction
   C. Fission nuclear reaction
   D. Fusion nuclear reaction
   E. None of these

2. A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect?

   A. Current
   B. Voltage
   C. Nuclear Radiation
   D. power
   E. None of these

3. The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?

   A. 4 days
   B. 12 days
   C. 16 days
   D. 8 days
   E. None of these

4. Which of the following is a positively charged particle emitted by a radioactive element?

   A. Beta Rays
   B. Alpha Rays
   C. Gamma Rays
   D. None of these

   Submitted by: AKBAR ALI

5. Which one of the following is not a radioactive element ?

   A. Cadmium
   B. Thorium
   C. Radium
   D. Uranium

   Submitted by: Mansoor Ahmed Suhag

6. Hydrogen bomb is based on the principle of ________ ?

   A. Nuclear fusion
   B. Artificial radioactivity
   C. Natural radioactivity
   D. Nuclear fission

   Submitted by: Rashid Mehmood

7. A moderator is used in nuclear reactor in order to ?

   A. Accelerate the neutrons
   B. Slow down the speed of the neutrons
   C. Increase the number of elections
   D. Decrease the number of electrons
   E. None of these

8. Nuclear radiation is emitted by those elements whose:

   A. molecules are stable
   B. molecules are unstable
   C. nuclei are stable
   D. nuclei are unstable

   Submitted by: Mansoor Ul Haque

9. Which of the following is used to control rods in nuclear fission?

   A. Graphite
   B. Heavy Water
   C. Cadmium
   D. All of these

   Submitted by: Munwar Ali Sohu

10. Nuclear sizes are expressed in a unit named ?

    A. Tesla
    B. Force
    C. Fermi
    D. Newton

    Submitted by: Haziq