UPSC CSE Prelims 2027 · GS Paper I

10 Prelims questions. 12 minutes. Every day.

A free daily test in the real UPSC pattern: +2 / −0.66 marking, every answer explained with its source, and your all-India rank for the day.

  • Free every day
  • English & தமிழ்
  • Google sign-in, no app
New · Past papers

Real UPSC Prelims papers, under exam conditions

Take a full UPSC Civil Services Prelims paper exactly as it was set: 100 questions, 2 hours, +2 / −0.66, then see UPSC's answer key and our explanations in English and தமிழ்.

GS Paper I · Series AProvisional UPSC key

UPSC CSE Prelims 2026

100questions
2 htime
198marks*
−0.66per wrong
Take the 2026 paper

* UPSC's official provisional answer key drops 1 question from scoring, so the paper is out of 198. When UPSC releases the final key we will compare every answer and re-score everyone automatically if anything changes.

GS Paper I · Series AOfficial UPSC final key

UPSC CSE Prelims 2025

100questions
2 htime
200marks*
−0.66per wrong
Take the 2025 paper

* UPSC's official final answer key, checked against the file on upsc.gov.in, drops no questions, so the paper is out of the full 200.

GS Paper I · Series AOfficial UPSC final key

UPSC CSE Prelims 2024

100questions
2 htime
194marks*
−0.66per wrong
Take the 2024 paper

* UPSC's official final answer key, checked against the file on upsc.gov.in, drops 3 questions from scoring, so the paper is out of 194.

GS Paper I · Series AOfficial UPSC final key

UPSC CSE Prelims 2023

100questions
2 htime
198marks*
−0.66per wrong
Take the 2023 paper

* UPSC's official final answer key, checked against the file on upsc.gov.in, drops 1 question from scoring, so the paper is out of 198.

GS Paper I · Series AOfficial UPSC final key

UPSC CSE Prelims 2022

100questions
2 htime
198marks*
−0.66per wrong
Take the 2022 paper

* UPSC's official final answer key, checked against the file on upsc.gov.in, drops 1 question from scoring, so the paper is out of 198.

GS Paper I · Series AOfficial UPSC final key

UPSC CSE Prelims 2021

100questions
2 htime
198marks*
−0.66per wrong
Take the 2021 paper

* UPSC's official final answer key, checked against the file on upsc.gov.in, drops 1 question from scoring, so the paper is out of 198.

Earlier papers: 2016–2020More papers: 2016–2025

GS Paper I · Series AAll official UPSC final keys

Same format as the papers above: 100 questions, 2 hours, +2 / −0.66. All five use UPSC's official final answer keys, checked against the files on upsc.gov.in. * The 2020 key drops 2 questions from scoring, so that paper is out of 196; the 2016–2019 keys drop none, so each is out of the full 200.

Same format as the 2026 paper: 100 questions, 2 hours, +2 / −0.66. All ten use UPSC's official final answer keys, checked against the files on upsc.gov.in. * Some keys drop questions from scoring: 2024 is out of 194, 2020 out of 196, and 2021–2023 out of 198; the others are out of the full 200.

What you get

  • Free: one full attempt of every paper, your score, UPSC's answer for all 100 questions, and explanations for 10 of them, starting with your mistakes.
  • Pro: unlimited retakes, every explanation in English and தமிழ், subject-wise strengths and weak areas, and your mistakes added to the revision notebook.
  • Questions exactly as printed by UPSC, checked twice against the official paper. Practice only, never ranked.
  • Every GS Paper I from 2016 to 2026 is live, each checked against UPSC's official key.

Answer keys, dropped questions and explained sample questions for each year, free to read: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016. All past papers →

How it works

A 12-minute daily habit built for accuracy

Prelims is lost as often to careless negative marks as to gaps in knowledge. A short, strict test every day trains both.

  1. 1

    Sign in with Google

    One tap. No password, no phone number, no marketing messages. Works on any phone.

  2. 2

    Take the 12-minute test

    The server keeps the clock, so everyone gets the same 12 minutes. +2 for right, −0.66 for wrong, 0 for skipped.

  3. 3

    See your score, rank & explanations

    Every answer explained with its NCERT or official source, your rank for the day and your place overall.

Try one now

A question from the series

Pick an option to see the answer and the explanation, just as you will after each test.

Sample · Science & Tech+2 / −0.66

Consider the following statements about mitochondria:

  • 1.They contain their own DNA.
  • 2.The Krebs (citric acid) cycle takes place in their matrix.
  • 3.In humans, mitochondrial DNA is inherited mainly from the father.

How many of the statements given above are correct?

Select an option to reveal the answer

What you get

Everything for daily Prelims practice. No gimmicks.

Daily ranked test

Ten questions at midnight in the forms UPSC actually uses: statements, Statement-I/II, pairs and "how many".

English and தமிழ்

Every daily test and weekly mock in both languages. Switch any time; your score and rank don't change.

Sunday weekly mock

25 questions on the week's themes with an all-India rank. Full-length 100-question papers in the revision phase.

Mistake notebookPRO

Wrong and skipped questions are saved and come back on a 1-3-7-21-day schedule until you get them right.

Explained answers

Each answer with its reasoning and source, shown the moment you submit.

Leaderboards and streaks

Daily, weekly and overall ranks by score, then time. Keep a daily streak going with a 7 AM reminder.

Your history

Every attempt saved. Pro adds subject-wise accuracy so you can see your weak areas.

Open about errors

Report any question. Corrections re-grade everyone and are listed on the accuracy page.

Syllabus plan

The 240-day GS Paper I plan

182 days of syllabus themes, then 58 days of spaced revision up to Prelims on 23 May 2027.

See the full schedule, day by day

Pricing

Honest passes. No auto-renewal.

Today's test is always free, and so is one attempt of every UPSC past paper. Upgrade only if you want past tests, full past-paper explanations, daily revision of your mistakes and subject analytics.

Free

₹0
every day, always

A steady 12-minute benchmark, every day.

  • Today's test (10 MCQs), in English or Tamil
  • Sunday weekly mock
  • Explanations and sources
  • Daily and overall leaderboards
  • Your score history
  • UPSC past papers: one attempt each, 10 explanations
  • Past tests
  • Mistake notebook revision
  • Subject-wise analytics
Start free

Pro · 30 days

₹99
one-time, for 30 days

For focused revision of a subject phase.

  • Everything in Free
  • Every past test and mock, any time
  • Mistake notebook with daily revision
  • Unlimited practice retakes
  • UPSC past papers: retakes and every explanation
  • Subject-wise strengths and weak areas
Get 30 days
Best value

Pro · 365 days

₹499
one-time · about ₹42 a month

The whole series, right through to Prelims.

  • Everything in Pro · 30 days
  • Covers the full 240-day plan to Prelims 2027
  • Every new test as it is added
Get 365 days

Prices include GST. Paid once through Razorpay (UPI, cards, net banking). Have a coupon? Redeem it in the app under Pro.

At a glance

What is the Daily Prelims Micro-Test?

A free daily practice test for UPSC Civil Services Prelims (GS Paper I) at 1way.in. Every day you get 10 multiple-choice questions on one syllabus theme, 12 minutes to answer them, UPSC marking of +2 for a correct answer and −0.66 for a wrong one, explanations with sources, and a rank against everyone who took the test that day.

It is built for aspirants who want a short, strict, daily habit: the same question forms UPSC uses (statement-based, Statement-I/II, match the pairs, “how many of the above”), the real negative marking, and a clear record of progress across the full syllabus.

Exam
UPSC CSE Prelims, GS Paper I
Each day
10 MCQs on one theme, 12 minutes
Marking
+2 correct · −0.66 wrong · 0 blank
New test
Every day at 00:00 IST
Weekly mock
Every Sunday, 25 questions, free on the day
Plan
240 days to Prelims 2027: 182 syllabus + 58 revision
Languages
English and தமிழ் (Tamil)
Price
Today's test free · Pro ₹99 / 30 days or ₹499 / year
Sign-in
Google account, no app to install
FAQ

UPSC Prelims daily test: common questions

The daily test

What is the Daily Prelims Micro-Test?

A free daily practice test for UPSC Civil Services Prelims (GS Paper I) at 1way.in. Every day you get 10 multiple-choice questions on one syllabus theme, 12 minutes to answer them, UPSC marking of +2 for a correct answer and −0.66 for a wrong one, explanations with sources, and a rank against everyone who took the test that day.

Is it really free?

Yes. Each day's test, and each Sunday's weekly mock, is free on its own day, with explanations and the leaderboard. Pro unlocks older tests, the mistake notebook with daily revision, and subject-wise analytics.

What is the marking scheme?

The UPSC Prelims GS scheme: +2 for a correct answer, −0.66 (one-third of the marks) for a wrong answer, and 0 for a question left blank.

How many questions are there and how long do I get?

10 questions in 12 minutes, about 72 seconds per question, which matches the pace of the real GS Paper I (100 questions in 120 minutes).

When does the test change?

A new test opens at midnight, Indian Standard Time. A test is ranked only on its own day (IST); after that it stays open for practice.

Can I retake a test?

Yes, as practice. Only your first attempt on the test's own day is ranked, by score and then by time taken.

Is 1way available in Tamil?

Yes. Every daily test and weekly mock is published in English and Tamil. Tap தமிழ் at the top of the test to switch; your answers, marks and rank are the same in either language. CSAT practice is in English, as in the UPSC paper.

What is the Sunday weekly mock?

From 4 October 2026, every Sunday has a free 25-question, 30-minute mock covering the week's themes plus a few earlier ones, with its own all-India rank. From 28 March 2027 it becomes a full-length 100-question, 2-hour paper.

What does the 240-day plan cover?

A 182-day syllabus phase with one GS Paper I theme a day across Polity, Economy, History, Geography, Environment & Ecology, Science & Technology, Art & Culture and International Relations, then a 58-day revision phase up to 22 May 2027, the day before Prelims. Recent developments are tied to static topics throughout. The full day-by-day plan is on the schedule page.

Can I practise UPSC previous-year papers?

Yes. The Past papers section has real UPSC Civil Services Prelims papers exactly as set, now GS Paper I for every year from 2016 to 2026 (11 papers): 100 questions in 2 hours with UPSC marking, UPSC's answer key and our explanations in English and Tamil. Every signed-in aspirant gets one full attempt of each paper free, with the score, the full answer key and 10 explanations. Pro adds retakes, every explanation and subject-wise analysis.

Can I get a daily reminder?

Yes. In the app, turn on reminders for a 7 AM note with the day's theme and an 8 PM nudge only if you haven't taken the test, or add a daily event to your calendar.

Pro and payments

What is the mistake notebook?

Every question you get wrong or skip is saved automatically. With Pro, five of them come back each day on a 1, 3, 7 and 21-day schedule until you answer them right every time, so you stop losing marks to the same traps.

How much does Pro cost and does it renew automatically?

Pro is ₹99 for 30 days or ₹499 for 365 days, GST included, paid once through Razorpay (UPI, cards, net banking). It never renews automatically. Buying again before it ends adds the days to your current pass.

I have a coupon code. Where do I use it?

Open the test, go to the Pro tab and enter it under “Have a coupon?”. Pro switches on straight away.

Can I get a refund?

Failed or duplicate payments are always refunded. For other cases, see the refund policy.

Accuracy, data and trust

How do you handle mistakes in questions?

Every question has a Report button. We review each report, correct the answer key where needed and re-grade everyone's scores automatically. The accuracy page publishes how many questions we have published, how many were reported and every correction we made.

What do you do with my data?

Only what the test needs: your Google name, email and picture, your answers and scores, and, if you turn them on, a reminder address for your browser. We do not sell data or show ads. You can download or delete everything at any time. See the privacy notice.

Who runs 1way?

Elogs Technology Private Limited, Bengaluru. 1way is an independent product and is not affiliated with UPSC or any government body.

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