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UPSC CSAT (Prelims Paper II): Qualifying Rules, Topic-Wise Preparation and a Plan for Punjab Aspirants

CSAT is the second paper of the UPSC Civil Services preliminary examination. It is "only qualifying", yet it has ended the attempt of many well-prepared candidates. This guide explains the rules, the question types and how to decide how much time CSAT needs in your preparation.

By PunjabExams Editorial Team · Updated 29 October 2026 · 6 min read · How we prepare guides

How the UPSC prelims is structured

Each CSAT question carries 2.5 marks, so a wrong answer costs about 0.83 marks. You must score at least 66 out of 200 in CSAT for your General Studies paper to be counted. Prelims marks are not added to the final merit; they only decide who writes mains.

What CSAT tests

The syllabus notified by UPSC covers:

1. Comprehension — reading passages and answering questions.
2. Interpersonal skills including communication skills.
3. Logical reasoning and analytical ability.
4. Decision-making and problem-solving.
5. General mental ability.
6. Basic numeracy (numbers and their relations, orders of magnitude, at Class 10 level) and data interpretation (charts, graphs, tables, data sufficiency, at Class 10 level).

In recent papers, comprehension and basic numeracy together have formed the largest part of CSAT, with reasoning questions making up most of the rest.

Step 1: Take a diagnostic test

Before planning, attempt a recent CSAT paper under exam conditions.

Repeat the diagnostic every month. CSAT difficulty changes from year to year, so aim for a safety margin of about 30 marks above the qualifying score.

Step 2: Comprehension

• Read the question stem first, then the passage.
• Questions usually ask for the main idea, an inference, an assumption or the author's tone.
• Eliminate options that are too broad, too extreme ("always", "never") or bring in outside knowledge.
• Practise reading editorials daily; speed and vocabulary improve with regular reading.

Step 3: Basic numeracy and data interpretation

Revise these Class 6–10 topics with NCERT and practice sets:

• number system, divisibility, HCF and LCM, remainders;
• percentages, ratio, averages, mixtures;
• profit and loss, simple and compound interest;
• time and work, time-speed-distance;
• permutations, combinations and probability at a basic level;
• geometry and mensuration basics;
• reading tables and bar, line and pie charts.

Step 4: Logical reasoning and decision-making

Syllogisms, statements and assumptions, statements and conclusions, coding, series, direction, seating arrangements, cubes and dice, and decision-making scenarios. Our reasoning methods guide covers many of these types with worked examples.

Step 5: Attempt strategy in the exam

• Attempt comprehension passages you find easy first; skip very long or dense ones initially.
• Do quick numeracy questions next; leave lengthy calculations for the second pass.
• Because of negative marking, avoid blind guessing. With four options and a one-third penalty, a blind guess has an expected value close to zero.
• Keep the target in mind: a comfortable qualifying score, not a perfect one.

A 12-week CSAT plan (alongside GS preparation)

Notes for aspirants from Punjab

• Several candidates who studied in Punjabi-medium schools find English comprehension the hardest part. Read one English editorial a day and summarise it in three lines.
• The same CSAT skills also help in the PPSC PCS preliminary exam, which has a similar aptitude paper.
• Public libraries in district towns and university libraries (such as Punjabi University, Patiala, Panjab University, Chandigarh, and GNDU, Amritsar) are useful places for a disciplined study routine.

Key points to remember

• Prelims Paper II (CSAT): 80 questions, 200 marks, 2 hours, qualifying at 33% (66 marks).
• Negative marking: one-third of the marks of the question (about 0.83 per wrong CSAT answer).
• Syllabus: comprehension, interpersonal and communication skills, logical reasoning, decision-making, general mental ability, basic numeracy and data interpretation at Class 10 level.
• Prelims marks are not counted in the final merit.
• Take a diagnostic test early and aim for a margin of about 30 marks above the qualifying score.
• CSAT skills also help in the PPSC PCS aptitude paper.

Practice questions

1. Q1. What is the minimum qualifying score in UPSC CSAT?

   • (a) 33 marks
   • (b) 66 marks
   • (c) 80 marks
   • (d) 100 marks
   Show answer

   Answer: (b) 66 marks — 33% of 200 = 66 marks.

2. Q2. Each CSAT question carries 2.5 marks. How many marks are deducted for a wrong answer?

   • (a) 0.5
   • (b) About 0.83
   • (c) 1
   • (d) 1.25
   Show answer

   Answer: (b) About 0.83 — One-third of 2.5 is about 0.83 marks.

3. Q3. A candidate answers 50 CSAT questions with 40 correct and 10 wrong. What is the score (2.5 per correct answer, one-third penalty)?

   • (a) 91.7
   • (b) 100
   • (c) 108.3
   • (d) 83.3
   Show answer

   Answer: (a) 91.7 — 40 × 2.5 = 100; 10 × 0.833 ≈ 8.33; 100 − 8.33 ≈ 91.7.

4. Q4. A sum becomes ₹1,210 in two years at 10% compound interest per annum. What is the principal?

   • (a) ₹1,000
   • (b) ₹1,100
   • (c) ₹1,050
   • (d) ₹1,200
   Show answer

   Answer: (a) ₹1,000 — P × 1.1² = 1,210, so P = 1,210 ÷ 1.21 = ₹1,000.

5. Q5. In a comprehension question, an option that uses the word "always" is often:

   • (a) The best answer
   • (b) Too extreme to be correct
   • (c) Always correct
   • (d) Irrelevant
   Show answer

   Answer: (b) Too extreme to be correct — Extreme absolute options are frequently wrong unless the passage explicitly supports them.

6. Q6. If the average of five numbers is 24 and one number is removed, the average becomes 22. What number was removed?

   • (a) 28
   • (b) 30
   • (c) 32
   • (d) 34
   Show answer

   Answer: (c) 32 — Total = 120; remaining total = 4 × 22 = 88; removed number = 120 − 88 = 32.

Frequently asked questions

Is CSAT marks counted in the prelims merit?

No. CSAT is qualifying. Your prelims rank depends only on General Studies Paper I, provided you score at least 33% in CSAT.

Do humanities students struggle with CSAT?

Some do, mainly in numeracy. Starting with Class 6–10 NCERT mathematics and steady practice solves most problems within two to three months.

Is CSAT similar to the aptitude paper in PPSC prelims?

The skills overlap closely, so preparation for one helps the other. Check each commission's notification for its own rules.

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