UPSC CSE (Civil Services Exam — Prelims) Free Mock Test

The Civil Services Examination (CSE) is the all-India recruitment exam conducted by the Union Public Service Commission for entry into the All India Services and Central Civil Services Group A and Group B — most notably the Indian Administrative Service (IAS), Indian Police Service (IPS), Indian Foreign Service (IFS), Indian Revenue Service (IRS), Indian Audit & Accounts Service (IA&AS), Indian Railway Management Service (IRMS) and around 18 other services in total. UPSC's lineage runs back to the Imperial Civil Service exam of 1922 in Allahabad and the post-Independence constitution of the modern UPSC on 26 January 1950 under Article 315. The CSE is widely considered one of the most competitive recruitment examinations in the world, with roughly 9-12 lakh applicants annually competing for 900-1100 final vacancies.

Selection happens in three sequential stages: the Preliminary Examination (objective, screening), the Main Examination (descriptive, 9 papers, merit-deciding) and the Personality Test (interview, 275 marks). The Prelims structure used today — two objective papers, with Paper II (CSAT) made qualifying — was introduced through the 2011 reforms and modified in 2015 when UPSC fixed the CSAT qualifying threshold at 33 percent. Kamiyab's practice surface targets the Prelims stage only: Paper I General Studies (the merit-deciding paper for shortlisting) and Paper II CSAT (the qualifying aptitude paper). Mains and Interview preparation requires answer-writing practice, optional subject coaching and mock interviews that sit outside Kamiyab's MCQ-driven practice model.

Both Prelims papers are held on a single day (forenoon: GS Paper I, afternoon: CSAT Paper II), each 2 hours long, each with 1/3 negative marking. Only candidates clearing the GS Paper I cutoff AND scoring at least 33% in CSAT advance to Mains. Cutoffs vary year to year: recent General-category Prelims cutoffs have hovered between 75-98 marks out of 200 (UPSC CSE 2022 General cutoff was 88.22; 2023 was 75.41 — a multi-year low driven by a hard GS paper). The Prelims is fundamentally a SCREENING test — only ~2-3% of applicants clear it — but it is also the stage where most preparation effort compounds over 12-18 months of structured reading and revision.

Begin with NCERT textbooks Class 6 to 12 across History, Geography, Polity, Economics and Science. The old NCERTs (Bipan Chandra-edited Modern India, RS Sharma's Ancient India, Satish Chandra's Medieval India) carry more depth than the new NCERTs but both must be read. NCERTs build the conceptual scaffolding; standard reference books layer on the exam-grade detail. Plan 8-10 weeks of pure NCERT reading at the start — this phase decides whether your Prelims base is solid or shaky.

Lock in standard reference books per subject and do NOT multiply sources. Polity: M Laxmikanth (Indian Polity, McGraw Hill) — the single uncontested source; read 3-4 times. Modern History: Spectrum's A Brief History of Modern India (Rajiv Ahir). Geography: GC Leong plus the Oxford School Atlas. Environment: Shankar IAS Environment book. Economy: Ramesh Singh or Sriram's IAS classroom notes. Science & Tech: NCERT Class 6-10 Science supplemented with current affairs is sufficient for the Prelims weight.

Current Affairs is the single biggest score swing in Prelims. Subscribe to ONE monthly magazine — Vision IAS or InsightsIAS Monthly — and stick with it for the full year. Supplement with PRS India for legislative tracking, PIB for scheme announcements, and IndiaBudget.gov.in for the Union Budget and Economic Survey. Read The Hindu or Indian Express daily for 45-60 minutes; maintain a single running notebook organised by GS subject.

CSAT preparation is NON-OPTIONAL after CSE 2023. The 2023 paper failed thousands of GS-strong aspirants who had de-prioritised CSAT — many ended at 60-65/200 against the 66.67 qualifying floor. Dedicate 1 hour per day to CSAT from Day 1 — alternate days for comprehension and basic numeracy. Use Disha CSAT Manual or TMH CSAT, solve 10 years of CSAT PYQs, and target 30-35 correct attempts out of 80.

Previous Year Questions are the most under-rated resource. Solve the last 10 years of Prelims GS papers TWICE — once untimed analytically (understanding why each option is right or wrong), once in timed exam mode. UPSC repeats themes relentlessly: roughly 25-30% of every Prelims paper has a direct or indirect PYQ root. Use Disha or Arihant PYQ compilations with detailed solutions.

Build a strict revision cycle. The single biggest failure mode is reading widely but not revising. Use 30-15-7-3-1 spaced repetition: revise a topic 30 days after first reading, then 15, 7, 3, and 1 day before the exam. Polity, Modern History, Geography and Environment respond extraordinarily well to spaced revision; Current Affairs needs continuous revision because it grows month by month.

Test series strategy: from January of the exam year, take 2-3 sectional tests plus 1 full-length mock per week. By March switch to 2 full mocks/week, by April-May 3 mocks/week with at least one in the actual exam slot (9:30 AM GS, 2:30 PM CSAT). Pick ONE series — Vision IAS PT, InsightsIAS PT or ForumIAS PT — and stick. Analyse each mock for 2-3x the time it took to write it; analysis is where learning happens.

Develop a personal elimination strategy for multi-statement questions, which now dominate Prelims (60-70% of items). UPSC's standard format is 'Which of the statements above is/are correct?' with 3-4 statements. Attempt only where you can confidently judge AT LEAST 2 of 3 statements; mark for review where you can judge only 1; SKIP where you cannot judge any. With 1/3 negative marking, blind guessing is a strategic loss across 100 questions.

Last 30 days: stop reading new material. Revise notes, solve 1 full mock per day with analysis, do CSAT 2 hours per day to maintain rhythm, re-read Laxmikanth's bolded sections, Shankar IAS environment summary tables, Spectrum chapter conclusions, and the last 18 months of compiled current affairs. Sleep 7+ hours in the final week — UPSC is a 4-hour endurance test and cognitive fatigue is the silent killer of borderline candidates.