UPSC Mains Chemistry Optional Question Paper 2026: Download Paper 1 & 2 PDF

The UPSC Mains Chemistry Optional Question Paper 2026 is scheduled for 30 August 2026. If you have selected Chemistry as your optional subject, you have two papers to attempt on the same day.

Paper I is scheduled from 9:00 AM to 12:00 Noon. Paper II is scheduled from 2:30 PM to 5:30 PM. Each paper carries 250 marks and has a duration of three hours.

The official question papers are released through the UPSC website. After the PDFs are released, you can access both papers and check the questions asked in the examination. You can also compare the questions with the prescribed Chemistry syllabus and your preparation.

UPSC Chemistry Optional Exam Schedule 2026

Chemistry is one of the optional subjects in the UPSC Civil Services Mains Examination. The subject has two papers, each carrying 250 marks.

You get three hours for each paper. Together, Paper I and Paper II carry 500 marks.

Chemistry Optional Paper-Wise Structure

The two papers cover different areas of Chemistry. Paper I includes physical and inorganic Chemistry. Paper II deals mainly with organic and applied Chemistry.

The question papers follow a descriptive or conventional format.

UPSC Chemistry Optional Paper 2026 at Glance

The key details for the Chemistry optional subject are given below:

UPSC Mains Chemistry Optional Question Paper 2026 PDF Download

The UPSC Chemistry Optional question paper 2026 can be accessed through the official UPSC question paper section after the Commission releases the PDFs.

Separate download links are provided for Paper I and Paper II. You can use them to access the respective question paper and check the questions asked in each session.

The respective PDF links are updated after the official question papers are released.

UPSC Chemistry Optional Paper 1

The UPSC Chemistry Optional Paper 1 is scheduled for the morning session on 30 August 2026. It carries 250 marks and has a three-hour duration.

Paper I covers physical and inorganic Chemistry. The syllabus includes areas such as atomic structure, thermodynamics and coordination chemistry.

Once the official paper is available, you can check how questions are distributed across these areas. You can also match individual questions with the relevant syllabus topics.

When reviewing Paper I, pay attention to the type of questions asked. You can note questions that require calculations, explanations, chemical equations or detailed conceptual answers.

UPSC Chemistry Optional Paper 2

Paper II is scheduled from 2:30 PM to 5:30 PM on 30 August 2026. It also carries 250 marks.

The paper focuses on organic chemistry, reaction mechanisms, stereochemistry and applied chemistry, along with other areas included in the prescribed syllabus.

After the official PDF is released, you can go through the questions and compare them with your notes. This can help you identify the topics covered and areas that need further revision.

You can also select questions from Paper II and attempt them within the three-hour duration. This can help you assess your answer-writing speed and presentation.

How to Analyse the Chemistry Question Paper 2026?

The UPSC Mains Chemistry Optional Question Paper 2026 can help you understand how different parts of the syllabus are represented in the examination.

When you review the papers, focus on:

• The distribution of questions across major topics.

• The concepts tested in each section.

• Questions that require numerical or analytical work.

• The use of chemical equations, structures and diagrams.

• Topics that appear in both direct and application-based forms.

• Questions that require more detailed preparation.

You can also compare the 2026 paper with previous years' Chemistry papers. This can help you understand changes in question framing and identify topics that deserve attention during revision.