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MCQs

Total Questions : 943 | Page 7 of 95 pages
Question 61. A fast breeder reactor
  1.    Utilises fast neutrons for causing fission
  2.    Converts fertile material (e.g., U-238) into fissile material (Pu-239)
  3.    Normally employs molten sodium as coolant
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 62. Fuel for a nuclear reactor (thermal) is
  1.    Uranium
  2.    Plutonium
  3.    Radium
  4.    None of these
 Discuss Question
Answer: Option A. -> Uranium
Question 63. Heat is generated in a nuclear reactor (thermal) by
  1.    Combustion of a nuclear fuel e.g. uranium
  2.    Fusion of atoms of uranium
  3.    Absorption of neutrons in uranium atoms
  4.    Fission of U-235 by neutrons
 Discuss Question
Answer: Option D. -> Fission of U-235 by neutrons
Question 64. β-rays emission in radioactive disintegration is always accompanied by the emission of
  1.    γ-rays
  2.    α-rays
  3.    Neutrons
  4.    None of these
 Discuss Question
Answer: Option A. -> γ-rays
Question 65. A radioactive substance does not emit
  1.    Α-ray
  2.    Proton
  3.    Position
  4.    Β-ray
 Discuss Question
Answer: Option B. -> Proton
Question 66. The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump.
  1.    Electromagnetic
  2.    Reciprocating
  3.    Centrifugal
  4.    Volute
 Discuss Question
Answer: Option A. -> Electromagnetic
Question 67. A boiling water reactor is the one, in which the
  1.    Coolant water is allowed to boil in the core of the reactor
  2.    Coolant water, after being heated in the reactor core, generates steam in a boiler
  3.    Pressurised water is pumped into the core
  4.    Fuel and the coolant are thoroughly mixed to form a homogeneous solution
 Discuss Question
Answer: Option A. -> Coolant water is allowed to boil in the core of the reactor
Question 68. A homogeneous reactor is the one, in which the
  1.    Fissile atoms are evenly distributed throughout the mass of nuclear reactor
  2.    Same substance (e.g. heavy water) is used as moderator & coolant
  3.    The fuel and the moderator is mixed to form a homogeneous material
  4.    All of the above
 Discuss Question
Answer: Option C. -> The fuel and the moderator is mixed to form a homogeneous material
Question 69. The phenomenon of radioactivity was discovered by
  1.    Madam Curie
  2.    Bacquerrel
  3.    Roentgen
  4.    J.J. Thomson
 Discuss Question
Answer: Option B. -> Bacquerrel
Question 70. Fast breeder test reactor at Kalpakkam is designed for using
  1.    Thorium as a fertile material
  2.    U-238 as a fertile material
  3.    Helium as a coolant
  4.    Uranium ore directly as a fuel
 Discuss Question
Answer: Option A. -> Thorium as a fertile material

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