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State PCS PYQPrelims 2022

UPPCS · Question 4

Most of the sources of energy we use represent stored solar energy. Which of the following is NOT ultimately derived from the sun's energy?

  1. Nuclear energy
  2. Geothermal energy
  3. Biomass energy
  4. Wind energy
Show answer & explanation

Answer: (A) Nuclear energy

Explanation

Nuclear energy comes from fission of uranium/thorium atoms, not from the sun. (Geothermal also is not solar-derived, but the key accepts nuclear.) (As per the official UPPSC answer key.)