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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 · 2025 · Paper I, General Studies · Q88 of 120

Geo-Scientist Prelims 2025 General Studies Q88: Which one of the following combinations consists of essential…

QuestionBiology / biomolecules

Which one of the following combinations consists of essential components of biomolecules and structural elements of cells?

  1. (a) Carbon, hydrogen, oxygen and nitrogen
  2. (b) Magnesium and phosphorus
  3. (c) Iron, zinc and manganese
  4. (d) Calcium, potassium and sulphur

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