Lakshya Education MCQs

Question: The ratio of atomic radius to its nuclear radius is about
Options:
A.10⁵
B.10⁸
C.10¹²
D.10¹⁵
Answer: Option A

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More Questions on This Topic :

Question 1. Thorium can be converted into U-233 in a __________ reactor.
  1.    Liquid metal cooled
  2.    Fast breeder
  3.    Thermal
  4.    Swimming pool
Answer: Option B
Question 2. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).
  1.    15
  2.    45
  3.    65
  4.    85
Answer: Option D
Question 3. The number of neutrons in the nucleus of Uranium⁻²33 (92U233) is
  1.    141
  2.    92
  3.    233
  4.    325
Answer: Option A
Question 4. Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.
  1.    Equal to
  2.    Less than
  3.    More than
  4.    Either more or less
Answer: Option C
Question 5. Thorium metal
  1.    Resembles steel in appearance
  2.    Is less hard (in the range of silver)
  3.    Is highly ductile
  4.    All of the above
Answer: Option D
Question 6. A radioactive isotope undergoes decay with respect to time following __________ law.
  1.    Logarithmic
  2.    Exponential
  3.    Linear
  4.    Inverse square
Answer: Option B

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