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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 · 2022 · Paper I, General Studies · Q61 of 120

Geo-Scientist Prelims 2022 General Studies Q61: Azotobacter and Clostridium convert

QuestionNitrogen cycle / biological nitrogen fixation

Azotobacter and Clostridium convert

  1. (a) gaseous molecular nitrogen into ammonia
  2. (b) ammonia present in soil to gaseous nitrogen
  3. (c) humus present in soil to mineralized constituents
  4. (d) normal healthy soil to toxic soil

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