Nuclear Power and Chemical Engineering Objective Questions - Set 07 - ObjectiveBooks

Nuclear Power and Chemical Engineering Objective Questions - Set 07

Practice Test: Question Set - 07

1. The phenomenon of nuclear fission is opposite to that of
    (A) Radioactive decay
    (B) Thermionic emission
    (C) Nuclear fusion
    (D) Combustion

2. Both tritium and deuterium have the same number of
    (A) Neutrons
    (B) Electrons
    (C) Protons
    (D) Nucleons

3. The disintegration rate of a radioactive element
    (A) Progressively increases
    (B) Progressively decreases
    (C) Remains constant throughout
    (D) May increase or decrease depending on the material

4. A fast breeder reactor employs
    (A) Graphite as moderator
    (B) Water as coolant
    (C) Molten sodium as coolant as well as moderator
    (D) U-235 as fuel

5. The largest stable nucleus is
    (A) U-235
    (B) U-238
    (C) Pb-206
    (D) Bi-209

6. Heavy water plant is not located at (INDIA)
    (A) Talcher
    (B) Tuticorin
    (C) Ramagundam
    (D) Kota

7. In β-decay of radioactive material, the ratio of neutron to proton
    (A) Increases
    (B) Remain same
    (C) Decreases
    (D) Is unpredictable; may increase or decrease

8. Main source of __________ is monazite sand.
    (A) Uranium
    (B) Polonium
    (C) Hafnium
    (D) Thorium

9. 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

10. Research reactors are normally meant for
    (A) Producing high neutron flux 1012-1013 neutrons/cm2, sec and studying the effect of neutron bombardment on different materials
    (B) Accelerating the neutrons
    (C) Power generation
    (D) None of these

11. The phenomenon of radioactivity was discovered by
    (A) Madam Curie
    (B) Becquerel
    (C) Roentgen
    (D) J.J. Thomson

12. Artificially produced radioactive isotopes are used for
    (A) Power generation
    (B) Treatment of certain diseases
    (C) Initiating nuclear fission and fusion
    (D) All (a), (b) and (c)

13. First experimental observation of nuclear fission was done by
    (A) Plane
    (B) Rutherford
    (C) Fermi
    (D) Hahn and Strassmann

14. Which one is different for the neutral atoms of the isotopes of an element?
    (A) Atomic weights
    (B) Atomic numbers
    (C) Number of protons
    (D) Number of electrons

15. Ordinary water is not used as a moderator because, it
    (A) Has a low absorption cross-section
    (B) Has a low scattering cross-section
    (C) Absorbs neutrons
    (D) Does not absorb neutrons

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