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MCQ practice · SSC Physics Board questions · Chapter 4: Work, Power and Energy

Chattogram Board 2023

In a nuclear power plant-

  1. i. ²³⁵₉₂U is used as the fuel
  2. ii. a nuclear fusion reaction takes place
  3. iii. special control rods are used

Think it through first, then pick an option.

  1. a i
  2. b i and iii
  3. c ii and iii
  4. d i, ii and iii
Answer and explanation

Correct answer: b i and iii

i true: Uranium 235 is the fuel of the nuclear plant. ii false: The plant gets energy by splitting uranium, not by fusion, which is the process of the sun and stars. iii true: Control rods absorb the extra neutrons to control the reaction.

Why the other options are wrong

  • a i: This is not the answer; the right combination is i and iii. i true: Uranium 235 is the fuel of the nuclear plant. ii false: The plant gets energy by splitting uranium, not by fusion, which is the process of the sun and stars. iii true: Control rods absorb the extra neutrons to control the reaction.
  • c ii and iii: This is not the answer; the right combination is i and iii. i true: Uranium 235 is the fuel of the nuclear plant. ii false: The plant gets energy by splitting uranium, not by fusion, which is the process of the sun and stars. iii true: Control rods absorb the extra neutrons to control the reaction.
  • d i, ii and iii: This is not the answer; the right combination is i and iii. i true: Uranium 235 is the fuel of the nuclear plant. ii false: The plant gets energy by splitting uranium, not by fusion, which is the process of the sun and stars. iii true: Control rods absorb the extra neutrons to control the reaction.