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. 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

5. 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

6. The critical mass of a fissionable material can be reduced by__________________?

   A. Heating it
   B. Cooling it
   C. Surrounding it by neutron reflecting material
   D. Surrounding it by neutron absorbing material

7. 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)

8. Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher _____________________?

   A. Melting point, hence can be subjected to higher temperature
   B. Density; hence core volume for a given power output would be smaller
   C. Resistance to effects of irradiation
   D. All A., B. and C.

9. Thermal neutrons which are used to cause the fission of U-235 have energy _____________ eV?

   A. < 0.025
   B. > 1
   C. 1-25
   D. > 200

10. Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around _____________ m/sec?

    A. 1
    B. 2200
    C. 3 × 1011
    D. 9 × 1021