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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2023 · Paper I, General Studies · Q100 of 120

Geo-Scientist Prelims 2023 General Studies Q100: Infrasonic sounds have frequencies

QuestionSound / frequency ranges

Infrasonic sounds have frequencies

  1. (a) above 25 kHz
  2. (b) between 20 kHz and 25 kHz
  3. (c) below 20 Hz
  4. (d) between 20 Hz and 20 kHz

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