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Chemical Engineering :: Nuclear Power Engineering

  1. Positron is a/an

  2. A.
    nucleus having two protons.
    B.
    helium nucleus.
    C.
    electron with positive charge.
    D.
    nucleus with one proton and one neutron.

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  3. Uranium is recovered from its ore (pitchblende) by

  4. A.
    froth floatation technique.
    B.
    leaching with sulphuric acid.
    C.
    smelting in a furnace.
    D.
    dissolving in water.

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  5. Which of the following is the best nuclear fuel?

  6. A.
    Np- 239
    B.
    U-234
    C.
    Pu-239
    D.
    Th-236

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  7. Pick out the correct statement.

  8. A.
    Positron is the antiparticle of electron.
    B.
    In α-decay, the ratio of neutron to proton decreases.
    C.
    Ionising power of β-rays is higher than that of α-rays.
    D.
    Speed of α-rays is more than that of γ-rays.

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

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

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  11. Which of the following accounts for the maximum energy release in the nuclear fission process ?

  12. A.
    Kinetic energy of fission products
    B.
    Radioactive decay of fission products
    C.
    Instantaneous release of γ-rays
    D.
    Kinetic energy of neutrons

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  13. In a pressurised water reactor (PWR), the

  14. A.
    fuel is natural uranium and heavy water acts both as moderator & coolant.
    B.
    coolant water boils in the core of the reactor.
    C.
    coolant water is pressurised to prevent bulk boiling of water in the core.
    D.
    use of moderator is not required.

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

  16. A.
    homogeneous
    B.
    graphite moderated
    C.
    fast breeder
    D.
    enriched uranium (3% U-235) fuelled

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  17. Coolant used in a boiling water reactor is

  18. A.
    hydrogen gas
    B.
    water
    C.
    steam
    D.
    a mixture of water & steam

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  19. A thermal nuclear reactor compared to a fast breeder reactor

  20. 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.

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