UPSC Combined Geo-Scientist (Main) Chemistry Paper I: Model Answers 2021 to 2025

What is inside

• Printed copy from VKCSpiral bound on A4, so diagrams stay full size and the book lies flat while you write. Posted anywhere in India within 3 working days; delivery is included in the fee.
• Five complete papers2021, 2022, 2023, 2024 and 2025. All eleven questions of every paper and every part, with the full question printed above its answer. The site solutions answer six.
• A plan for each paperEach paper opens with its pattern, a time plan and a suggested choice of six questions: Question 1 and one from each of Sections B to F.
• Coordination and solids drawn outCrystal-field splitting, spin states and magnetic moments, Jahn-Teller distortion, the trans effect, electron counting in metal carbonyls, perovskite and other unit cells, silicates and defects, drawn as labelled structures and diagrams.
• Analytical and nuclear numericals worked throughAcid-base, redox and complexometric titrations, gravimetric analysis, decay, half-life and binding energy: every numerical worked from the reaction to a result with units.
• Where the marks come fromTopic-wise weightage of marks across the five years, mapped to the nine units of the syllabus, and a topic-wise index of every part with marks and page. Coordination compounds alone carry 355 of the 1750 marks.
• The syllabus and a prefaceA guide to the Paper I syllabus at the front, numbered the way the weightage table and index use it, and a preface on writing inorganic and analytical answers.

The book or the free solutions on this site?

• Free on this siteEach year's solution, read page by page in the browser, with the Telegram and channel links on its pages. Each solution here answers the six questions picked in its time plan: Question 1 and one question from each of Sections B to F. The book answers all eleven.Read the solutions
• The bookAll five years in one clean volume that opens offline in the Kindle app: all eleven questions of every paper answered, a time plan for each paper, the topic-wise weightage and a topic-wise index for revising one topic across five years.Order the printed copy Kindle edition on Amazon.in

Before you buy

• Printed copy from VKCSpiral bound on A4, so diagrams stay full size and the book lies flat while you write. Posted anywhere in India within 3 working days; delivery is included in the fee.
• Read in the Kindle appThe free Kindle app on a phone, tablet or computer opens these books. You do not need a Kindle device.
• Fixed pagesPages keep their layout, so diagrams, tables and equations sit exactly where they were drawn. Some older e-ink Kindles do not open fixed-page books; Amazon lists the supported devices.
• Try the free sampleOn the Amazon page, "Send a free sample" puts the opening pages in your Kindle app before you pay.

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