Free Mock Tests,
Free Daily Current Affairs
& Full PYQ with Proper Citations
UPSCSphere is India's #1 open-access portal for UPSC Civil Services Examination (CSE) Prelims preparation. Access 100% free mock tests for GS-1 & CSAT, solve free daily current affairs & news information MCQs from The Hindu & PIB, and practice the free full PYQ archive (2015–2026) with proper citations and standard textbook references (Laxmikanth, Spectrum, Ramesh Singh, NCERTs).
Instant High-Yield Subject Drills
10-question timed speed drills with instant answers and page-exact citations.
1v1 Aspirant Speed Duel
Challenge another live aspirant to a rapid 5-minute quiz battle. Test your speed, nerve, and accuracy under pressure.
Daily Editorial & CA Test
10 high-yield questions sourced from The Hindu, PIB, and Down To Earth. Test editorial concepts on the spot.
Syllabus Micro-Tracker
Track every single GS-1 and CSAT sub-topic down to the root concept. Monitor your 1st, 2nd, and 3rd revision rounds.
Launch your first mock test to unlock personalized AI diagnostic chapter recommendations based on your real performance.
No mock test data recorded yet. Take a 10-question speed drill to start mapping your strengths and weak areas.
Take Diagnostic Mock Test →Complete your first mock test to generate an authentic cutoff clearance probability.
Every Question is Mapped to Standard UPSC Books & Page Numbers
Never waste time searching where an answer came from. Study directly from the authentic source immediately after answering.
About UPSCSphere & Platform Purpose
UPSCSphere is an open, non-commercial educational web application created to democratize access to high-quality preparation tools for the UPSC Civil Services Examination (CSE). Our mission is to eliminate guesswork from Prelims practice by combining active recall, realistic timed mocks, and standard book page references.
Authentic Reference Citations
Every question is directly mapped to standard UPSC textbooks (M. Laxmikanth, Spectrum, Ramesh Singh, NCERT) with exact edition and page numbers.
12-Year Official PYQ Vault
Complete, verified question papers from 2015 to 2026 for GS Paper-1 and CSAT Paper-2 with 50:50 option elimination techniques.
Syllabus & Diagnostic Analytics
Granular topic-by-topic tracking, spaced repetition revision queues, and cutoff probability calculators benchmarked against historical data.
When you sign in with Google on UPSCSphere, we only request access to your primary email address and basic profile name. This information is strictly utilized to:
- Authenticate your account securely across your mobile and desktop devices.
- Persist your mock quiz scores, accuracy metrics, and All-India Rank benchmarks.
- Save your bookmarked questions and spaced repetition revision cards.
- Synchronize your 1st, 2nd, and 3rd syllabus revision rounds in real time.
Free Mock Tests, Free Current Affairs & Full PYQ of UPSC Prelims with Proper Citations and Reference
Everything you need to crack UPSC Civil Services Examination (CSE) Prelims in one open-access platform. Master high-yield General Studies (GS Paper 1) and Civil Services Aptitude Test (CSAT Paper 2) with verified syllabus-mapped question banks, daily news information, and past year question papers.
Free Mock Tests & Test Series
Customizable GS & CSAT mock tests (5, 10, 20, 50, and 100 questions) with realistic timer options, negative marking calculations (-0.667 for GS, -0.833 for CSAT), and instant AI performance diagnostics.
Create Free Mock Test →Free Current Affairs & Daily News
20 daily fresh Prelims MCQs curated every morning from The Hindu, Indian Express, Press Information Bureau (PIB), and Down To Earth with deep editorial explanations and source links.
Solve Today's 20 MCQs →Free Full PYQ Vault (2015–2026)
Complete official question papers of the last 12 years with official UPSC keys, 50:50 elimination tactics, and 2-hour full exam simulations for Prelims GS-1 and CSAT Paper-2.
Explore 12-Year Vault →Proper Citations & Book References
Every single solution references standard textbooks: M. Laxmikanth (7th Ed), Spectrum Rajiv Ahir, Ramesh Singh Indian Economy, Shankar IAS Environment, and NCERTs with exact chapter and page numbers.
View Syllabus Topics →Frequently Asked Questions — Free UPSC CSE Prelims Preparation
Where can I attempt 100% free UPSC Prelims GS and CSAT mock tests online?▼
You can attempt free full-length and subject-wise UPSC Prelims mock tests on UPSCSphere. Our test configurator allows you to select subjects (Indian Polity, Economy, Modern History, Geography, Environment, CSAT Quant & Reasoning), choose time limits, and simulate real negative marking (+2.0 / -0.667 for GS, +2.5 / -0.833 for CSAT).
How does the free Daily Current Affairs and News Information quiz work?▼
UPSCSphere auto-generates 20 high-yield Current Affairs MCQs every morning at 7:00 AM IST from verified national sources including The Hindu, The Indian Express, PIB, and Down To Earth. Each question comes with full editorial background, related GS static concepts, and standard textbook citations.
Are full previous year questions (PYQs) of UPSC Prelims 2015 to 2026 available with proper citations?▼
Yes! The UPSCSphere 12-Year PYQ Vault contains every official UPSC question asked between 2015 and 2026 for both General Studies Paper-1 (100 Qs) and CSAT Paper-2 (80 Qs). Each question includes official UPSC answer keys, elimination guidance, and exact standard textbook citations (e.g. M. Laxmikanth Chapter 13 Page 145).
How does the 50:50 Option Elimination technique help in UPSC CSE Prelims?▼
Prelims requires eliminating extreme statements, identifying subtle distracters, and resolving 50:50 ambiguities under pressure. UPSCSphere features an interactive Strike-Out tool on every option and explains the specific elimination logic for each question so aspirants develop high-accuracy exam intuition.