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

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

   A. 0.2 B. 7 C. 35 D. 50...

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. 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...

5. Heavy water is preferred over ordinary water as a coolant, because it?

   A. Acts both as an efficient coolant as well as a moderator B. Can be heated to a higher temperature without pressurizing C. Is less prone to radiation damage D. All A., B. and C....

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. Molten sodium is used as a coolant in a fast breeder reactor, because of its_________________?

   A. Excellent moderating properties B. Neutron breeding capability C. Faster heat removal capability from the core D. Capability to increase the reaction rate in the core...

8. Molten sodium (as a coolant in fast breeder reactor) ?

   A. Can’t attain high temperature at normal pressure B. Is not at all corrosive, even at a higher temperature C. Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water D. None of these...

9. Coolant used in a boiling water reactor is________________?

   A. Hydrogen gas B. Water C. Steam D. A mixture of water & steam...

10. ‘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...