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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 · 2021 · Paper I, General Studies · Q2 of 120

Geo-Scientist Prelims 2021 General Studies Q2: Why silver chloride turns grey in Sunlight?

QuestionChemical reactions / photolysis

Why silver chloride turns grey in Sunlight?

  1. (a) It forms silver metal and is an example of endothermic reaction
  2. (b) It forms silver metal and is an example of exothermic reaction
  3. (c) It forms silver metal and is an example of substitution reaction
  4. (d) It forms silver ion (Ag⁺) and is an example of endothermic reaction

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