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UPSC Civil Services (Mains)

Chemistry optional

2 papers
250 marks each
3 h per paper
5 of 8 questions, Q1 and Q5 compulsory

Paper II covers organic chemistry and spectroscopy.

Paper II, organic chemistry and spectroscopy

Solution, 2026

UPSC Civil Services (Mains), Chemistry optional. 26 pages. Questions 1, 2, 5, 6 and 8 are answered on these pages; every question has its full text answer on its own page.

Question paperSolutions are for reading on this site and are not offered as a download.All six years in one book

Every question of 2026, one page each28 parts in 8 questions, with the question as text and its full model answer

Question 1 50 marks

Question 2 50 marks

Question 3 50 marks

Question 4 50 marks

Question 5 50 marks

Question 6 50 marks

Question 7 50 marks

Question 8 50 marks

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