Nuclear Power Plant and Engineering MCQ Test - Set 04 - ObjectiveBooks
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Nuclear Power Plant and Engineering MCQ Test - Set 04

Practice Test: Question Set - 04


1. Isotopes of an element have the same
    (A) Number of neutrons
    (B) Mass number
    (C) Electronic configuration
    (D) Atomic weight

2. Which of the following factors is the most important in the site selection for a nuclear power plant?
    (A) Absence of earthquake prone zone in nearby areas
    (B) Abundant availability of water
    (C) Remotely located from residential areas
    (D) Proximity to fuel source

3. Use of molten metal as a coolant in fast breeder reactor helps in
    (A) Rapid heat transfer from the core
    (B) Accelerating the reaction rate in the core
    (C) Breeding neutrons
    (D) Accelerating the neutrons

4. Graphite is used in nuclear reactor as
    (A) Insulation lining of the reactor
    (B) Fuel
    (C) Lubricant
    (D) Retarder of neutron velocity

5. A nuclear reactor can't be used for
    (A) The production of radioisotopes
    (B) Supplying intense fields or beams of neutron for scientific experiments
    (C) Marine ship propulsion
    (D) None of these

6. 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) Pressurized water
    (D) Boiling water

7. Pick out the wrong statement.
    (A) Isotopes have the same number of protons & electrons, but different number of neutrons
    (B) Hydrogen has two isotopes
    (C) In ordinary hydrogen, 1H1 and 1H2 are present in the ratio 6400:1
    (D) None of these

8. Which of the following is the most harmful for the human being?
    (A) β-rays
    (B) X-rays
    (C) γ-rays
    (D) Ultra violet rays

9. Emission of β-particles during radioactive decay of a substance is from
    (A) Innermost shell
    (B) Nucleus
    (C) Outermost shell
    (D) None of these

10. Energy equivalent to one atomic mass unit (amu) is __________ MeV.
    (A) 9.31
    (B) 93.1
    (C) 931
    (D) 9310

11. Solar energy results from __________ reaction.
    (A) Fission
    (B) Combustion
    (C) Thermonuclear
    (D) None of these

12. 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

13. 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

14. If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be __________ days.
    (A) 5
    (B) 10
    (C) 20
    (D) 30

15. The ratio of volume of an atom to that of its nucleus is
    (A) 1012
    (B) 10-12
    (C) 10-8
    (D) 108

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