Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is ______________ kgf/cm2?

Related Mcqs:

1. Water is a better coolant than a gas (like CO2, He, N2 etc.), because it_________________?

   A. Is a better neutron moderator as well
   B. Require comparatively smaller pumps and heat exchanger for a given heat transfer rate
   C. Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature
   D. All A., B. and C.

2. An ideal coolant for a nuclear reactor should ________________?

   A. Be a good absorber of neutrons
   B. Be capable of attaining high temperature, only when it is pressurised
   C. Have high density, but low heat transfer co-efficient
   D. Be free from radiation damage and non-corrosive

3. Which is used as a coolant in nuclear reactor due to its high capture cross-section ?

   A. H2
   B. N2
   C. He
   D. CO2

4. ‘Light water’ used as a coolant in nuclear reactor is nothing but______________________?

   A. Ordinary water
   B. Mildly acidic (pH = 6) water
   C. Mildly alkaline (pH = 8) water
   D. None of these

5. Candu reactor is a ______________ nuclear reactor?

   A. Natural uranium fuelled heavy water cooled & moderated
   B. Highly enriched uranium (85% U-235) fuelled
   C. Homogeneous
   D. Fast breeder

6. Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an ______________ reactor?

   A. Homogeneous
   B. Graphite moderated
   C. Fast breeder
   D. Enriched uranium (3% U-235) fuelled

7. Primary purpose of a ____________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014neutrons/cm2 second?

   A. Research
   B. Power
   C. Breeder
   D. Homogeneous

8. H2 is a better coolant than CO2, due to it‟s relatively____________________?

   A. Lower density
   B. Higher specific heat
   C. Non-reactivity to uranium
   D. Lower neutron capture cross-section

9. A thermal nuclear reactor compared to a fast breeder reactor ?

   A. Uses slower neutrons for fission
   B. Uses faster neutrons for fission
   C. Gives higher power density
   D. Requires less fuel to run at the same power level

10. Coolant used in a fast breeder reactor is____________________?

    A. Molten sodium
    B. Heavy water
    C. Ordinary water
    D. Helium