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30questions from PYQs and NCERT

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Three steps from a chapter to knowing exactly where you stand.

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Step 2

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A timed paper on an answer sheet, with mark-for-review and real exam marking.

Step 3

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Browse free previous-year questions →

Question of the dayChemical Thermodynamics

Use the following data at 298 K (all in kJ mol

^{- 1}

Δ_{f} H^{\circ} [MgO (s)] = - 602

; enthalpy of sublimation of Mg(s)

= + 148

; first and second ionisation enthalpies of Mg(g)

= + 738

and

+ 1451

; bond dissociation enthalpy of

O_{2} (g) = + 498

; electron gain enthalpy for

O (g) + e^{-} \to O^{-} (g)

= - 141

; lattice enthalpy of MgO, defined for

MgO (s) \to M g^{2 +} (g) + O^{2 -} (g)

= + 3791

. The enthalpy change for

O^{-} (g) + e^{-} \to O^{2 -} (g)

, in kJ mol

^{- 1}

, is ______. Exactly one option is correct.

A new question every day at midnight.

What you get with every chapter

Built to show you what to fix next, not just what you scored.

Rank, not just marks

See where you stand among everyone who attempted the same chapter, with your percentile.

Solutions you can follow

Step-by-step working for every question, in English or Hindi.

Spaced revision

Every question you miss comes back after 1, 3 and 7 days until you've got it.

Build your own test

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Accuracy by topic and level

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Exams

One question bank, three exams.

NEET

Physics, Chemistry and Biology, chapter by chapter, with NCERT-first questions.

+4 correct · −1 incorrect

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JEE Main

Mathematics, Physics and Chemistry, built on previous-year papers and NCERT.

+4 correct · −1 incorrect

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JEE Advanced

Latest-pattern question types: one or more correct, numerical answer and matching lists.

Each type has its own marking

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For parents

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A weekly summary: chapters done, streak, marks and rank
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How parents are involved

Sunday summary · example

Ultra Scholar update for Aarav
Chapters this week: 3 (target 3)
Practice streak: 6 days
Latest: Quadratic Equations, 96/120, rank 37 of 413

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Questions

What is in one chapter?

About 30 questions from previous-year papers and NCERT, a timed attempt with real exam marking, your marks and rank as soon as you submit, a detailed solution for every question, and a practice round on the ones you got wrong.

How is my rank worked out?

Your first full attempt of a chapter is compared with everyone else who has taken it. Later attempts are practice and don't change your rank.

Can I use it on more than one device?

You can sign in anywhere, but each chapter or bundle you buy opens only on the device you bought it on. To use it on another device, buy it again there.

Are questions available in Hindi?

Yes. You can read questions and solutions in English, Hindi, or both together.

Can my parent pay?

Yes. Tap Ask parent on any chapter and your parent can pay for it from their account. Parents see progress, never your answers or solutions.

Do you work with coaching centres and schools?

Yes. Institutes buy seats for a batch; students join with a code and teachers see batch progress.

What is your refund policy?

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