Lakshya Education MCQs

Question: The decay product of tritium (a beta emitter) is
Options:
A.Lithium
B.Helium
C.Deuterium
D.Hydrogen
Answer: Option B

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Question 1. Molten sodium (as a coolant in fast breeder reactor)
  1.    Can't attain high temperature at normal pressure
  2.    Is not at all corrosive, even at a higher temperature
  3.    Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water
  4.    None of these
Answer: Option C
Question 2. One 'amu' is equivalent to
  1.    9.31 MeV
  2.    931 eV
  3.    931 Mev
  4.    931J
Answer: Option C
Question 3. Which of the following factors is the most important in the site selection for a nuclear power plant?
  1.    Absence of earthquake prone zone in nearby areas
  2.    Abundant availability of water
  3.    Remotely located from residential areas
  4.    Proximity to fuel source
Answer: Option A
Question 4. The half life period of a radioactive element depends on its
  1.    Temperature
  2.    Pressure
  3.    Amount
  4.    None of these
Answer: Option D
Question 5. First experimental observation of nuclear fission was done by
  1.    Plane
  2.    Rutherford
  3.    Fermi
  4.    Hahn and Strassman
Answer: Option C
Question 6. 'Light water' used as a coolant in nuclear reactor is nothing but
  1.    Ordinary water
  2.    Mildly acidic (pH = 6) water
  3.    Mildly alkaline (pH = 8) water
  4.    None of these
Answer: Option A

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