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Phase 2 Exams are over · May 15, 2026
CBSE Class 10
All 4 predicted sets — instant access, no payment needed
2,500+ students used ClearSteps for their boards
Sample — see what you get
These questions have appeared in CBSE board exams year after year. Your child studies the most important ones first — finish all 4 sets and they have covered everything needed to score their best.
Q. Prove that √2 is irrational.
Asked in past CBSE board exams
Write this answer → Examiner must give full marks
Every solution follows the CBSE official marking scheme — the same guide your examiner uses to check your paper.
Step 1
Assume √2 is rational. So √2 = p/q where p and q are co-prime integers (HCF = 1) and q ≠ 0.
Step 2
Squaring both sides: 2 = p²/q² → p² = 2q². Since 2 divides p², 2 must also divide p. So let p = 2m.
Step 3
Substitute p = 2m: (2m)² = 2q² → 4m² = 2q² → q² = 2m². Since 2 divides q², 2 must also divide q.
Conclusion
2 divides both p and q — this contradicts HCF(p, q) = 1. So our assumption was wrong. Therefore √2 is irrational. ✓
Q. State Ohm's Law. A wire has a resistance of 12 Ω. Find the current through it when a potential difference of 6 V is applied across it.
Asked in past CBSE board exams
Write this answer → Examiner must give full marks
Every solution follows the CBSE official marking scheme — the same guide your examiner uses to check your paper.
Ohm's Law
The current through a conductor is directly proportional to the potential difference across its ends, at constant temperature and conditions: V = IR.
Given
Resistance R = 12 Ω, Potential difference V = 6 V.
Solution
I = V / R = 6 / 12 = 0.5 A
Answer
Current through the wire = 0.5 A ✓
How it works
We studied 10 years of CBSE papers
Every question from every past exam, all analysed in one place.
We found what repeats every year
Each concept is ranked — high, medium or low probability.
Your child studies only what matters
All important questions with solutions and AI predicted Sets — available instantly, free.
Subjects covered
Mathematics
Standard & Basic both
Science
Physics · Chemistry · Biology
English
Language & Literature
Social Science
History · Geography · Civics
Chapters that come every year
Based on 10 years of CBSE Class 10 board papers
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Hyderabad · Used Mathematics
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Delhi · Used Maths and SST
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Chennai · Used SST
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Patna · Used Maths and SST
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Lucknow · Used SST
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Ahmedabad · Used Mathematics
Common questions
We studied 10 years of CBSE Class 10 question papers and found which concepts repeat every year. We rank them as high, medium or low probability — so you know exactly what to focus on.
No. Same syllabus, same CBSE pattern. If you prepared for boards, you already know this exam. The only difference is this is your second chance to improve your score.
Instant access to all important questions with step-by-step answers written exactly as per the CBSE official marking scheme. Write the answer exactly as shown — get full marks, no guessing. Questions are ranked by how likely they are to come. AI predicted Sets also included.
Yes, completely free. The Phase 2 exams are over and we want every student to benefit from the material we built. No payment, no catch — just access.