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UPSC Combined Geo-Scientist

Chemist

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

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2026 · Paper II, Chemistry · Q97 of 120

Geo-Scientist Prelims 2026 Chemistry Q97: Consider the following statements with respect to compounds A and B

QuestionOrganic / syn elimination (Cristol)

Consider the following statements with respect to compounds A and B

  1. The dihedral angle between Cl and H on adjacent carbons in compound A is 180°
  2. The dihedral angle between Cl and H on adjacent carbons in compound B is 0°
  3. Compound A undergoes HCl elimination about 8 times faster than compound B
UPSC Combined Geo-Scientist Prelims 2026 Paper II (Chemistry), Q97: figure printed with the question

How many of the above statement(s) is/are correct ?

  1. (a) Only one
  2. (b) Only two
  3. (c) All three
  4. (d) None

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