Related Mcqs:

1. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of ____________ percent of U-235 (i.e. fissile material)?

   A. 15
   B. 45
   C. 65
   D. 85

2. Thermal nuclear reactors using enriched uranium as fuel contains a maximum of ____________ percent fissile material i.e. U-235?

   A. 1
   B. 2
   C. 3
   D. 7

3. U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about _____________ percent?

   A. 85
   B. 50
   C. 3
   D. 97

4. Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at_______________?

   A. Alwaye (in Kerala)
   B. Jadugoda (in Jharkhand)
   C. Kalpakkam (in Tamilnadu)
   D. Gopalpur coast (in Orissa)

5. Enrichment of uranium is done to increase the concentration of ______________ in the natural uranium?

   A. U-238
   B. U-233
   C. U-235
   D. Pu-239

6. In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous ________________?

   A. Uranium oxide
   B. Uranium hexafluoride
   C. Uranium carbide
   D. Uranium sulphate

7. Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor ?

   A. Molten sodium cooled
   B. CO2 gas cooled
   C. Pressurised water
   D. Boiling water

8. Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?

   A. Highly purified water
   B. A compound of oxygen and deuterium
   C. Water having dissolved salts of heavy metals
   D. None of these

9. Nuclear reactors are provided with shield to guard against the emission of mainly _____________ rays?

   A. X
   B. α and β
   C. Neutrons & gamma
   D. Infrared

10. Thermal shield is used in high powered nuclear reactors to__________________?

    A. Protect the walls of the reactor from radiation damage
    B. Absorb the fast neutrons
    C. Slow down the secondary neutrons
    D. Protect the fuel element from coming in contact with the coolant