GOV EXAM ADDA

1. Which type of reaction produces the most harmful radiation?

Answer & Solution

2. Who Invented the nuclear reactor?

A. Sanford Fleming

B. Benoit Fourneyron

C. Enrico Fermi

D. Adolf gaston Eugen Fick

Answer & Solution

3. In nuclear reactor, Neutrons are slowdown by the

A. Moderator

B. Fissionable Product

C. Controlling rod

D. Coolant system

Answer & Solution

4. Which of the following is used as a nuclear reactors?

Answer & Solution

5. Which among the following is false about alpha particles?

A. They have high kinetic energy

B. They have positively charged helium nuclei

C. They have high ionizing power

D. They have high penetrating power

Answer & Solution

6. Name the particle that is most essential to continue the chain reaction during the fission of Uranium?

Answer & Solution

7. Heavy water used as a coolant in nuclear reactor. Heavy water is

A. Water containing Minerals of Heavy metals

B. Water containing heavy Isotopes of Hydrogen atom

C. Water rich in Minerals

D. Ozonised water

Answer & Solution

8. Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission?

Answer & Solution

9. Unstable substances exhibit higher radioactivity due to

Answer & Solution

10. Nuclear Power Reactor acts on the Principle of

A. Thermal Heating

B. Fission

C. Fusion

D. Combined Effect of all given above

Answer & Solution

11. Which one of the following used as a moderator in nuclear reactor?

Answer & Solution

12. The isotope of Uranium in atomic reactor is

Answer & Solution

13. High amount of energy is released in the explosion of atomic bomb is due to

A. Conversion of Mechanical energy into nuclear energy

B. Conversion of neutrons into protons

C. Conversion of mass into energy

D. Conversion of Chemical energy into thermal energy

Answer & Solution

14. Graphite is used as a ____in nuclear reactor

Answer & Solution

15. The radiation that can penetrate deepest in our body

A. Alpha particles

B. Beta Particles

C. UV Radiation

D. Gamma particles

Answer & Solution

16. Which of the following nuclei is unstable?

Answer & Solution

17. The element which is commonly used in nuclear reactor for producing electricity in nuclear fission is

Answer & Solution

18. The two elements which are used to absorb the neutrons in nuclear fission during chain reaction

A. Cadmium and Uranium

B. Uranium and Boron

C. Boron and Cadmium

D. Boron and Plutonium

Answer & Solution

19. Control rods used in the nuclear reactor are made of

Answer & Solution

20. Alpha particles are _____

A. Negatively charged

B. Lower in ionizing power as compared to gamma rays

C. Twice the mass of beta particles

D. Just like helium nuclei

Answer & Solution