Upsc Csat Papers 2026

Last Updated: March 2026

The UPSC Civil Services Aptitude Test (CSAT), officially known as General Studies Paper-II, is a qualifying examination that tests candidates on their analytical skills, decision-making abilities, and general mental aptitude. While it is qualifying in nature (candidates need only 33% to pass), it has become a major hurdle for many aspirants. This comprehensive guide covers everything you need to know about UPSC CSAT 2026.

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Exam Overview

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Eligibility Criteria

Age Limit

• General Category: 21-32 years
• OBC Category: 21-35 years (3 years relaxation)
• SC/ST Category: 21-37 years (5 years relaxation)
• Persons with Benchmark Disability: Additional 10 years relaxation

Educational Qualification

• Bachelor's degree in any discipline from a recognized university
• Final year students can apply provisionally

Nationality

• Indian citizen (for IAS, IPS, IFS)
• Subject of Nepal/Bhutan or Tibetan refugee (for other services)

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Salary and Pay Scale (After Clearing Mains & Interview)

Additional Benefits:

• Dearness Allowance (DA)
• House Rent Allowance (HRA)
• Transport Allowance (TA)
• Medical benefits
• Pension and gratuity
• Official vehicle and accommodation (at senior levels)

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Exam Pattern 2026

Key Points:

• Qualifying Marks: 66 marks (33% of 200)
• Negative Marking: 0.83 marks deducted for each wrong answer (1/3rd of 2.5)
• Decision Making questions have NO negative marking
• Questions are of Objective Type (MCQs)

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Syllabus Overview

1. Comprehension

• Passage-based questions testing understanding and inference
• English language comprehension skills (Class X level)

2. Interpersonal Skills & Communication

• Communication effectiveness
• Interpersonal effectiveness

3. Logical Reasoning & Analytical Ability

• Syllogisms
• Statement and Arguments
• Statement and Assumptions
• Statement and Conclusions
• Statement and Courses of Action
• Cause and Effect
• Coding-Decoding
• Blood Relations
• Direction Sense
• Ranking and Ordering

4. Decision Making & Problem Solving

• Real-life scenario-based questions
• Administrative decision-making situations
• No negative marking for these questions

5. General Mental Ability

• Series completion (Number, Letter, Figure)
• Classification
• Analogy
• Venn Diagrams
• Mathematical operations
• Calendar and Clock problems

6. Basic Numeracy

• Number Systems
• HCF and LCM
• Percentage
• Profit and Loss
• Simple and Compound Interest
• Ratio and Proportion
• Averages
• Time, Speed and Distance
• Time and Work
• Permutation and Combination
• Probability
• Mensuration

7. Data Interpretation

• Tables
• Bar Graphs
• Line Graphs
• Pie Charts
• Mixed Graphs

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Quantitative Aptitude Questions with Solutions

Question 1: Number Series

Find the missing number: 2, 6, 12, 20, 30, ?

Solution: The pattern is: n(n+1) where n starts from 1

• 1 × 2 = 2
• 2 × 3 = 6
• 3 × 4 = 12
• 4 × 5 = 20
• 5 × 6 = 30
• 6 × 7 = 42

Shortcut: Differences are 4, 6, 8, 10, so next difference = 12 → 30 + 12 = 42

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Question 2: Percentage

If A's salary is 20% less than B's salary, by how much percentage is B's salary more than A's?

Solution: Let B's salary = 100 Then A's salary = 80

Percentage increase needed = (100-80)/80 × 100 = 20/80 × 100 = 25%

Shortcut Formula: If A is x% less than B, then B is [x/(100-x)] × 100% more than A = [20/(100-20)] × 100 = 20/80 × 100 = 25%

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Question 3: Profit and Loss

A shopkeeper sells an article at a profit of 25%. If he had bought it at 10% less and sold it for ₹7 less, he would have gained 30%. Find the cost price.

Solution: Let CP = ₹100 Original SP = ₹125 (25% profit)

New CP = ₹90 (10% less) New SP for 30% profit = 90 × 1.30 = ₹117

Difference in SP = 125 - 117 = ₹8 When difference is ₹8, CP = ₹100 When difference is ₹7, CP = (100/8) × 7 = ₹87.50

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Question 4: Time and Work

A can complete a work in 12 days and B can complete the same work in 18 days. They work together for 4 days, then A leaves. How many more days will B take to complete the work?

Solution: A's 1 day work = 1/12 B's 1 day work = 1/18

(A+B)'s 1 day work = 1/12 + 1/18 = (3+2)/36 = 5/36

Work done in 4 days = 4 × 5/36 = 20/36 = 5/9

Remaining work = 1 - 5/9 = 4/9

B will complete 4/9 work in: (4/9) × 18 = 8 days

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Question 5: Ratio and Proportion

The ratio of ages of A and B is 4:5. After 6 years, the ratio becomes 6:7. What is the present age of A?

Solution: Let present ages be 4x and 5x

After 6 years: (4x+6)/(5x+6) = 6/7 Cross multiply: 7(4x+6) = 6(5x+6) 28x + 42 = 30x + 36 2x = 6 x = 3

A's present age = 4 × 3 = 12 years

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Question 6: Simple Interest

A sum amounts to ₹9800 in 5 years and ₹12005 in 8 years at simple interest. Find the principal.

Solution: SI for 3 years (8-5) = 12005 - 9800 = ₹2205 SI for 1 year = 2205/3 = ₹735 SI for 5 years = 735 × 5 = ₹3675

Principal = 9800 - 3675 = ₹6125

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Question 7: Compound Interest

The difference between compound interest and simple interest on ₹5000 for 2 years at 8% per annum is:

Solution: Difference = P × R²/10000 = 5000 × 8 × 8/10000 = 5000 × 64/10000 = ₹32

Shortcut: Difference = P(R/100)²

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Question 8: Speed and Distance

A train 150m long crosses a platform 250m long in 20 seconds. What is the speed of the train?

Solution: Total distance = 150 + 250 = 400m Time = 20 seconds Speed = 400/20 = 20 m/s

Convert to km/h: 20 × 18/5 = 72 km/h

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Question 9: Probability

A bag contains 4 red, 5 green, and 3 blue balls. Two balls are drawn at random. What is the probability that both are red?

Solution: Total balls = 12 Probability = (4/12) × (3/11) = 12/132 = 1/11

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Question 10: Data Interpretation

Study the table and answer:

Q: What is the percentage increase in sales from 2020 to 2024?

Solution: Increase = 195 - 120 = 75 Percentage increase = (75/120) × 100 = 62.5%

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Question 11: Permutation

In how many ways can the letters of the word 'LEADING' be arranged so that the vowels always come together?

Solution: Word: L-E-A-D-I-N-G Vowels: E, A, I (3 vowels) Consonants: L, D, N, G (4 consonants)

Treat vowels as one unit: (EAI) + L + D + N + G = 5 units These can be arranged in 5! ways Vowels within can be arranged in 3! ways

Total arrangements = 5! × 3! = 120 × 6 = 720

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Question 12: Average

The average of 11 numbers is 50. If the average of the first 6 numbers is 48 and the average of the last 6 numbers is 52, find the 6th number.

Solution: Sum of 11 numbers = 11 × 50 = 550 Sum of first 6 = 6 × 48 = 288 Sum of last 6 = 6 × 52 = 312

6th number = (288 + 312) - 550 = 600 - 550 = 50

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Question 13: Mensuration

The diagonal of a square is 10√2 cm. What is its area?

Solution: For a square: Diagonal = Side × √2 Side = 10√2/√2 = 10 cm Area = 10 × 10 = 100 cm²

Shortcut: Area = Diagonal²/2 = (10√2)²/2 = 200/2 = 100 cm²

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Question 14: HCF and LCM

The HCF of two numbers is 12 and their LCM is 360. If one number is 72, find the other.

Solution: Product of two numbers = HCF × LCM 72 × Other number = 12 × 360 Other number = (12 × 360)/72 = 60

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Question 15: Allegation

In what ratio must water be mixed with milk costing ₹48 per litre to get a mixture worth ₹36 per litre?

Solution: Using allegation rule: Water (₹0) _______ Milk (₹48) \ / ₹36 /
(48-36)=12 (36-0)=36

Ratio = 12:36 = 1:3

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Reasoning Questions with Solutions

Question 1: Syllogism

Statements:

1. All roses are flowers
2. Some flowers are red
3. No red is blue

Conclusions: I. Some roses are red II. No flower is blue

Solution: Only Conclusion I follows (Some roses which are flowers can be red) Conclusion II does not follow as only "some flowers" are red, not all.

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Question 2: Coding-Decoding

If COMPUTER is coded as RFUVQNPC, how will MEDICINE be coded?

Solution: Pattern: Each letter is shifted by +1, +2, +3... alternatively C(+1)→R, O(+2)→F, M(+3)→U, P(+4)→V, U(-1)→Q, T(-2)→N, E(-3)→P, R(-4)→C

Wait, let's check reverse: R-F-U-V-Q-N-P-C Actually it's: First 4 letters +1,+2,+3,+4 and last 4 -1,-2,-3,-4

MEDICINE → F(O), N(E), F(F), O(O), J(H), G(G), F(F), J(N) Correct code: FOJHGFFJ or applying same: EOJDJEFM

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Question 3: Blood Relations

Pointing to a photograph, a man said, "She is the daughter of my grandfather's only son." How is the man related to the girl?

Solution: Grandfather's only son = Man's father Daughter of man's father = Man's sister

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Question 4: Direction Sense

A man walks 5 km North, turns right and walks 3 km, turns right again and walks 5 km. How far is he from the starting point?

Solution: Visualize:

• Start at origin
• Walk 5 km North → (0, 5)
• Turn right (East), walk 3 km → (3, 5)
• Turn right (South), walk 5 km → (3, 0)

Distance from start = 3 km

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Question 5: Analogy

Doctor : Hospital :: Teacher : ?

Solution: Doctor works in Hospital Teacher works in School

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Question 6: Ranking

In a row of 40 students, Amit is 15th from the left. What is his position from the right?

Solution: Position from right = Total - Position from left + 1 = 40 - 15 + 1 = 26th

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Question 7: Statement-Assumption

Statement: "Use XYZ brand soap for fairer skin." - An advertisement

Assumptions: I. People want fairer skin II. Other soaps don't make skin fair

Solution: Only Assumption I is implicit. The ad assumes people desire fairer skin. Assumption II is not implicit as ads don't usually claim superiority directly.

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Question 8: Venn Diagram

Which diagram best represents the relationship between: India, Delhi, Asia?

Solution:

• Asia is the largest (continent)
• India is within Asia (country)
• Delhi is within India (capital)

This is a concentric circle relationship: Delhi ⊂ India ⊂ Asia

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Question 9: Calendar

What was the day of the week on 15th August 1947?

Solution: Using Zeller's congruence or known reference: 1st January 1947 was Wednesday Count days: 31+28+31+30+31+30+31+15 = 227 days 227 mod 7 = 3 (remainder) Wednesday + 3 = Friday

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Question 10: Course of Action

Statement: The school dropout rate in rural areas has increased significantly.

Courses of Action: I. Government should open more schools in rural areas II. Awareness campaigns about education should be conducted

Solution: Both courses of action follow logically. More schools address accessibility, awareness addresses mindset.

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General Knowledge Questions

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English Questions with Solutions

Question 1: Spot the Error

Identify the error in: "The number of students are increasing day by day."

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Question 2: Synonyms

Choose the synonym of BENEVOLENT: a) Malevolent b) Kind c) Cruel d) Harsh

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Question 3: Antonyms

Choose the antonym of EPHEMERAL: a) Temporary b) Transient c) Eternal d) Fleeting

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Question 4: One Word Substitution

A person who knows many languages: a) Polyglot b) Philanthropist c) Misanthrope d) Bibliophile

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Question 5: Idioms

What does "To burn the midnight oil" mean? a) To waste time b) To study/work late at night c) To start a fire d) To be angry

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Previous Year Cutoff Marks

*GS Paper-I cutoffs shown for reference. CSAT is qualifying at 33% (66 marks).

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3-Month Preparation Strategy

Month 1: Foundation Building

Week 1-2: Comprehension & Communication

• Read English newspapers daily (The Hindu/Indian Express)
• Practice 2-3 comprehension passages daily
• Focus on speed reading

Week 3-4: Logical Reasoning

• Study syllogisms, statement-assumptions, coding-decoding
• Solve 20-30 reasoning questions daily
• Learn Venn diagram techniques

Month 2: Quantitative Aptitude

Week 1-2: Basic Numeracy

• Number systems, HCF-LCM, Percentage, Profit-Loss
• Ratio-Proportion, Averages
• Practice 30-40 questions daily from each topic

Week 3-4: Advanced Topics

• Time-Work, Time-Speed-Distance
• Probability, Permutation-Combination
• Mensuration basics

Month 3: Data Interpretation & Mock Tests

Week 1-2: Data Interpretation

• Tables, Bar graphs, Pie charts, Line graphs
• Practice DI sets daily
• Focus on calculation speed

Week 3-4: Revision & Mocks

• Solve previous year papers (2011-2025)
• Take 2-3 full-length mocks weekly
• Analyze weak areas and revise

Daily Schedule (2-3 hours)

• Morning: Newspaper reading (30 min)
• Afternoon: Topic-wise practice (1 hour)
• Evening: Mock test/Previous paper (1 hour)

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Best Books and Resources

Recommended Books

Online Resources

• Websites: UPSC official site (upsc.gov.in), Clear IAS, Insights on India
• YouTube Channels: Unacademy UPSC, Study IQ Education, Drishti IAS
• Apps: Testbook, Gradeup, Unacademy Learning App
• Previous Papers: Available on UPSC website (2011-2025)

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Frequently Asked Questions (FAQs)

Q1: Is CSAT qualifying or counted for merit?

A: CSAT is a qualifying paper. You need 66 marks (33%) to pass. Marks are not counted for Prelims cutoff ranking.

Q2: Can I clear CSAT without mathematics background?

A: Yes! The level is Class X basic numeracy. With consistent practice, anyone can clear it.

Q3: How many questions should I attempt to be safe?

A: Aim for 28-30 correct answers (70-75 marks) to be comfortably above the cutoff.

Q4: Is there negative marking in CSAT?

A: Yes, 0.83 marks (1/3rd of 2.5) deducted for each wrong answer. Decision-making questions have no negative marking.

Q5: Which section should I focus on more?

A: Comprehension (40% weightage) is the most important, followed by Reasoning and Basic Numeracy.

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Final Tips for Success

1. Don't take CSAT lightly - Many qualified candidates fail due to overconfidence
2. Practice calculation speed - Use Vedic math tricks
3. Read editorials daily - Improves comprehension speed
4. Attempt decision-making questions - They're scoring with no negative marks
5. Time management - Don't spend more than 2 minutes per question
6. Mock tests are crucial - Simulate exam conditions
7. Accuracy over attempts - 27 correct is better than 35 with 10 wrong

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Last Updated: March 2026

Best of luck with your UPSC CSAT 2026 preparation! 🇮🇳