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UPSC CSAT Syllabus & Preparation with Worked Practice
CSAT is General Studies Paper II in UPSC Prelims. It tests how well you understand a passage, analyse a problem and work with numbers under time pressure. Start with a diagnostic paper, then build a practice routine around the skills that need attention.
Reviewed 10 October 2026
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CSAT topic checklist
The official syllabus includes comprehension; communication and interpersonal skills; logical reasoning and analytical ability; decision-making and problem-solving; general mental ability; Class X-level numeracy and data interpretation. The paper carries 200 marks, lasts two hours and requires 33% to qualify.
Break numeracy practice into ratios, percentages, averages, number properties and interpreting tables or charts. These are useful practice categories, not a claim that UPSC assigns a fixed number of questions to each topic. For reading, practise distinguishing what a passage states from an inference it actually supports.
How to diagnose a low score
Take an official paper without looking at its answers. Mark which questions you could solve without a time limit and which still require learning. If your untimed accuracy is strong but the timed result is weak, practise selection and shorter sets. If the same concepts fail in both attempts, return to the underlying method first.
Record the time spent on a question that you eventually leave. Several such questions can consume the time needed for an entire easy set. Practise a decision rule: after reading, identify the method and likely workload before committing to a long calculation.
Original numeracy practice: successive changes
Question: A quantity rises by 20% and then falls by 20%. Is it back to its original value?
Solution: Start with 100. After the rise it becomes 120. A 20% fall from 120 is 24, leaving 96. The net change is a 4% decrease. The second percentage acts on a different base, so the changes do not cancel. This is an original practice example, not a previous-year UPSC question.
A manageable weekly practice routine
Use two sessions for reading passages, two for numeracy and one for reasoning or data interpretation. Reserve a separate session for reviewing mistakes rather than continually taking new tests. Adjust this split after a diagnostic paper; it is a starting plan, not a universal timetable.
When reviewing comprehension, write the sentence that supports the answer and why the tempting alternative goes beyond the passage. For arithmetic, record the simplest correct setup. Revisit these notes a week later and check whether you can solve the problem without remembering only its final number.
Common CSAT questions
Can GS I compensate for a weak CSAT result?
No. The CSAT qualifying requirement is separate.
Should I attempt every question?
Choose attempts based on understanding and the marking rules. Random guessing and spending too long on a single set can both damage a timed result.
Which papers should I practise?
Begin with the official papers linked in the previous-year paper guide. Use dated papers as practice, and the current notification for rules.
Official sources
UPSC CSE 2026 syllabus and marking rules
GoodPillars is an independent preparation resource. Use the official notification and later updates for application decisions and examination rules.
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Reviewed 10 October 2026 · Independent preparation guidance
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