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MCQs

Total Questions : 943 | Page 94 of 95 pages
Question 931. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).
  1.    65
  2.    45
  3.    85
  4.    15
 Discuss Question
Answer: Option C. -> 85
Question 932. The number of neutrons in the nucleus of Uranium⁻²33 (92U233) is
  1.    233
  2.    92
  3.    325
  4.    141
 Discuss Question
Answer: Option D. -> 141
Question 933. The ratio of atomic radius to its nuclear radius is about
  1.    10¹⁵
  2.    10¹²
  3.    10⁸
  4.    10⁵
 Discuss Question
Answer: Option D. -> 10⁵
Question 934. Thorium can be converted into U-233 in a __________ reactor.
  1.    Fast breeder
  2.    Swimming pool
  3.    Liquid metal cooled
  4.    Thermal
 Discuss Question
Answer: Option A. -> Fast breeder
Question 935. Solar energy results from __________ reaction.
  1.    Thermonuclear
  2.    Combustion
  3.    None of these
  4.    Fission
 Discuss Question
Answer: Option A. -> Thermonuclear
Question 936. Unit of radioactivity is
  1.    Barn
  2.    Fermi
  3.    Angstrom
  4.    Curie
 Discuss Question
Answer: Option D. -> Curie
Question 937. Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is
  1.    12
  2.    3
  3.    0.1
  4.    1
 Discuss Question
Answer: Option C. -> 0.1
Question 938. A fast breeder reactor employs
  1.    Molten sodium as coolant as well as moderator
  2.    Water as coolant
  3.    Graphite as moderator
  4.    U-235 as fuel
 Discuss Question
Answer: Option D. -> U-235 as fuel
Question 939. Specific gravity of uranium and plutonium is about
  1.    27
  2.    19
  3.    13
  4.    9
 Discuss Question
Answer: Option B. -> 19
Question 940. Coolant present in the primary circuit of a pressurised water reactor is high pressure
  1.    Superheated steam
  2.    Saturated water
  3.    Sub cooled water
  4.    Saturated steam
 Discuss Question
Answer: Option B. -> Saturated water

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