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Free MCQ practice, and interview prep that follows a plan

TestLab has two parts. MCQ practice: 44,152 questions across 282 subjects, each with an explanation, free and supported by ads. Interview prep: technical interview questions with a short and a full answer, a day-by-day plan and spaced review, on a paid plan.

Free, supported by ads MCQ practice Practice tests, explanations, levels, certificates, XP and streaks. Paid plan Interview prep Short and full answers, practice mode, a study plan and daily review.

MCQ practice

Free, supported by ads

Practice tests for college subjects, IT, engineering and aptitude. Easy questions need no account.

  • Practice tests by subject

    Browse 282 subjects by category, or search for one, and start a test straight away.

  • Answer first, then the explanation

    Pick an option and you see at once whether it was right, with an explanation of the correct answer.

  • Easy, medium and hard

    Questions are split into three levels. Clear one to unlock the next, so they get harder as you improve.

  • A certificate for each level

    Clearing a level earns a certificate with your accuracy, ready to share on LinkedIn.

  • XP and levels

    Every answer earns XP, more when it's right, with bonuses for your streak and for each level you clear.

  • Daily streaks

    Practise on consecutive days to build a streak; your longest one is kept too.

  • Progress by subject

    See how many questions you've answered and your accuracy at each level, for every subject.

  • Carry on where you stopped

    Continue a subject from where you left off; progress is saved to your account, not the browser.

  • Notifications

    Get a note when you clear a level or earn a certificate.

How levels unlock

  1. E

    Easy

    Open to everyone, no account needed.

  2. M

    Medium

    Sign in, then answer 10 easy questions with 60% or more correct.

  3. H

    Hard

    Answer 10 medium questions with 60% or more correct.

Start MCQ practice Create a free account

Interview prep

Paid plan

Technical interview questions for each technology, written to be remembered and then understood. The plan gives full access to every technology.

  • Short answer, then the full one

    Each question opens with a short answer you can say in an interview, then a full explanation.

  • Code where it helps

    Full answers include code examples and note which versions they apply to.

  • Mark what you know

    Tick a question as known or mark it to revise later, and see your progress for each technology.

  • Practice mode

    Answers stay hidden until you've thought of yours; tap to reveal and check yourself.

  • A plan up to your interview

    Choose your date and up to 10 technologies. The questions are spread over the days left, with the last day for revision.

  • Spaced review

    Questions you've read come back at growing intervals. "Your 5 for today" shows the ones that are due.

  • Reminders by email

    Optional daily plan reminders, review emails and a weekly summary. Unsubscribe in one click.

  • Interview XP

    Reading full answers and marking questions earns XP and keeps the same daily streak as MCQ practice.

  • Try before you pay

    A few full answers are free to read without signing in, so you can see the quality first.

See interview questions Compare plans

On every page

Works on your phone
Every page fits a phone screen; your progress follows your account to any device.
Light and dark
Switch themes from the header, or follow your device setting.
Keyboard friendly
Visible focus, skip links and labelled buttons throughout.
Your data stays yours
We don't sell personal data. The Privacy Policy explains what we keep and why.

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Start MCQ practice Prepare for an interview