CBSE Class 12 Science (PCM) (CBSE Class XII — Science Stream (Physics + Chemistry + Math)) — Free Online Mock Test
CBSE Board · Class 12 PCM (engineering aspirants) · Physics + Chemistry + Math · 3h each · 70 marks theory + 30 practical/internal. · Official language: English & Hindi.
Advanced
India
School & Pre-University
135 questions
240 min
50 distinct variants
Start free practice test →
CBSE Class 12 Science (PCM) exam at a glance
CBSE Class 12 Science (PCM) section breakdown
The CBSE Class 12 Science (PCM) mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
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Physics (35 Q)
35 questions · 60 minutes · ~103 sec/question
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Chemistry (35 Q)
35 questions · 60 minutes · ~103 sec/question
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Mathematics (35 Q)
35 questions · 60 minutes · ~103 sec/question
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English Core (30 Q)
30 questions · 60 minutes · ~120 sec/question
CBSE Class 12 Science (PCM) scoring & marking scheme
Strategy: CBSE Class 12 Science (PCM) has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: CBSE Class 12 PCM (out of 70 per paper).
How CBSE Class 12 Science (PCM) is conducted
Mode
Standard — practice without proctoring on Wrexa Edge, or enable optional webcam proctoring to simulate test-day conditions.
Test format
Linear / fixed-form — every candidate sees the same number of questions per section.
Backtracking
Allowed — you can revisit and change answers within a section.
Mark for review
Available — flag tough questions and return to them before submitting the section.
Tools available during the CBSE Class 12 Science (PCM) exam
Wrexa Edge renders these tools inside the mock test exactly as they appear on the real CBSE Class 12 Science (PCM) exam — same shortcuts, same behaviour.
CBSE Class 12 Science (PCM) time strategy
With 135 questions in 240 minutes, you have about 107 seconds per question on average. Successful candidates aim for the following pacing on each section:
Physics (35 Q)
Target ~103 sec/question. If a question takes more than 155 seconds, mark for review and move on.
Chemistry (35 Q)
Target ~103 sec/question. If a question takes more than 155 seconds, mark for review and move on.
Mathematics (35 Q)
Target ~103 sec/question. If a question takes more than 155 seconds, mark for review and move on.
English Core (30 Q)
Target ~120 sec/question. If a question takes more than 180 seconds, mark for review and move on.
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
CBSE Class 12 Science (PCM) topics covered
Across the 50 Wrexa Edge variants of CBSE Class 12 Science (PCM), the following topics appear most often (sample distribution from one variant):
Physics (35 Q)
- Physics — Energy · 5
- Physics — Circular Motion · 5
- Physics — Electricity · 5
- Physics — Waves · 5
- Physics — Mechanics · 5
- C12 Phy — Modern Phy · 2
- Physics — Electromagnetism · 2
- C12 Phy — Electrostatics · 1
Chemistry (35 Q)
- Chemistry — Fundamentals · 28
- C12 Chem — Organic · 3
- C12 Chem — Kinetics · 2
- C12 Chem — Biochem · 2
Mathematics (35 Q)
- C12 Math — Calculus · 2
- C12 Math — Integration · 2
- Algebra — Quadratics · 2
- Algebra — Systems · 2
- Algebra — Exponents · 2
- Algebra — Inequalities · 2
- Algebra — Functions · 2
- Geometry — Circles · 2
English Core (30 Q)
- Reading — Trade History · 2
- Reading — Vaccines · 2
- Reading — Computer Science · 2
- Reading — Marine Biology · 2
- Reading — Neural Networks · 2
- Grammar — Subject-Verb Agreement · 2
- Grammar — Tense · 2
- Grammar — Pronouns · 2
Sample CBSE Class 12 Science (PCM) questions
A preview of real practice questions from the Wrexa Edge CBSE Class 12 Science (PCM) bank — the same style, phrasing and difficulty you'll face on test day. Full solutions unlock free inside the mock.
Physics (35 Q) · C12 Phy — Electrostatics
Q1. Coulomb's law: force between two charges scales as:
Why: Correct answer: D — 1/r² (inverse-square). Topic: C12 Phy — Electrostatics.
Chemistry (35 Q) · C12 Chem — Kinetics
Q2. A "first-order" reaction has rate proportional to:
Why: Correct answer: D — The first power of one reactant concentration. Topic: C12 Chem — Kinetics.
Mathematics (35 Q) · C12 Math — Calculus
Q3. d/dx(sin x) =
Why: Correct answer: D — cos x. Topic: C12 Math — Calculus.
English Core (30 Q) · Reading — Globalization
Q4. The passage on globalization primarily aims to:
Why: Correct answer: D — describe a phenomenon or concept. Topic: Reading — Globalization.
Physics (35 Q) · C12 Phy — Magnetism
Q5. A current-carrying conductor in a magnetic field experiences:
Why: Correct answer: A — F = BIL sin θ. Topic: C12 Phy — Magnetism.
Chemistry (35 Q) · C12 Chem — Kinetics
Q6. The activation energy in the Arrhenius equation is:
Why: Correct answer: A — The minimum energy required for a reaction to proceed. Topic: C12 Chem — Kinetics.
These are a handful of the 6750 unique CBSE Class 12 Science (PCM) questions across all 50 Wrexa Edge variants — start a free mock to attempt the full set with instant scoring.
CBSE Class 12 Science (PCM) difficulty calibration
Advanced tier. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep.
CBSE Board · Class 12 PCM (engineering aspirants) · Physics + Chemistry + Math · 3h each · 70 marks theory + 30 practical/internal. · Official language: English & Hindi.
Verified content — Wrexa Edge's CBSE Class 12 Science (PCM) bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for CBSE Class 12 Science (PCM)
Real test-day interface
Our sat skin mirrors the actual CBSE Class 12 Science (PCM) testing software — same timer, palette, tools, and navigation.
50 distinct variants
6750 unique practice questions, each variant a fresh test — not just shuffled options.
Detailed analytics
Scaled score, section accuracy, topic-wise heatmap, time-per-question — see where to focus after every attempt.
Spaced repetition (Notebook)
Wrong answers and flagged questions flow into an SM-2 spaced-repetition deck so you actually retain what you learn.
Optional proctoring
Browser-based face-api detection (no install) — turn it on to simulate a high-stakes environment.
Free to start
No credit card. Sign up, pick a variant, and your first CBSE Class 12 Science (PCM) mock starts in under a minute.
CBSE Class 12 Science (PCM) study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
1
Phase 1 — Learn the syllabus
Weeks 1–4
- Work through every section — Physics (35 Q), Chemistry (35 Q), Mathematics (35 Q), English Core (30 Q) — from your core study material
- Make short notes and a formula/fact sheet you can revise quickly
- Attempt topic questions right after finishing each area
2
Phase 2 — Practice & sectionals
Weeks 5–8
- Solve previous-year and practice questions section by section
- Time yourself on Physics (35 Q) and your weakest areas
- Keep an error log and revisit every mistake weekly
3
Phase 3 — Full-length mocks
Weeks 9–12
- Take full-length CBSE Class 12 Science (PCM) mocks in the real test interface
- Analyse accuracy, time per question and silly mistakes after each mock
- Revise from notes and re-attempt only weak-topic questions
Where CBSE Class 12 Science (PCM) can take you
A strong CBSE Class 12 Science (PCM) result opens up these careers and higher-study paths:
College & university admission
A strong score strengthens applications to top undergraduate programmes and competitive entrance exams.
Scholarships & merit awards
High performers qualify for merit scholarships, honours tracks and early-admission schemes.
Foundation for competitive exams
Builds the core concepts that later feed into engineering, medical, and civil-service entrance tests.
Frequently asked questions
- What is the CBSE Class 12 Science (PCM) exam pattern?
- CBSE Class XII — Science Stream (Physics + Chemistry + Math) contains 135 questions across 4 sections: Physics (35 Q), Chemistry (35 Q), Mathematics (35 Q), English Core (30 Q). Total duration is 240 minutes (about 107 seconds per question).
- Does CBSE Class 12 Science (PCM) have negative marking?
- No — CBSE Class 12 Science (PCM) has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is CBSE Class 12 Science (PCM) scored?
- Scaled score range: 0 to 70. CBSE Class 12 PCM (out of 70 per paper).
- How can I practise CBSE Class 12 Science (PCM) online for free?
- Wrexa Edge gives you 10 free full-length CBSE Class 12 Science (PCM) mock tests — with instant scoring, detailed explanations and analytics — plus 40 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of CBSE Class 12 Science (PCM)?
- CBSE Class 12 Science (PCM) is rated Advanced difficulty on Wrexa Edge. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep. CBSE Board · Class 12 PCM (engineering aspirants) · Physics + Chemistry + Math · 3h each · 70 marks theory + 30 practical/internal. · Official language: English & Hindi.
- How long is the CBSE Class 12 Science (PCM) exam?
- CBSE Class 12 Science (PCM) runs for 240 minutes total across 4 sections. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in CBSE Class 12 Science (PCM)?
- CBSE Class 12 Science (PCM) is split into: Physics (35 Q), Chemistry (35 Q), Mathematics (35 Q), English Core (30 Q). Each section is timed and weighted separately. CBSE Board · Class 12 PCM (engineering aspirants) · Physics + Chemistry + Math · 3h each · 70 marks theory + 30 practical/internal. · Official language: English & Hindi.
- What tools or aids are allowed during CBSE Class 12 Science (PCM)?
- On-screen scientific calculator (matches the real exam interface).
- Is the CBSE Class 12 Science (PCM) test adaptive?
- No — CBSE Class 12 Science (PCM) is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many CBSE Class 12 Science (PCM) mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct CBSE Class 12 Science (PCM) variants — each with different question content, not just shuffled options — the first 10 free for everyone and 40 more with Pro. That's 6750 unique practice questions in the real test-day interface.
- Is there a free CBSE Class 12 Science (PCM) test series 2026?
- Yes. The Wrexa Edge CBSE Class 12 Science (PCM) test series for 2026 gives you 10 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are CBSE Class 12 Science (PCM) previous year question–style papers included?
- Every CBSE Class 12 Science (PCM) mock is modelled on the official exam pattern and the style of previous years' papers — the same 135-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free CBSE Class 12 Science (PCM) mock test online?
- Wrexa Edge's CBSE Class 12 Science (PCM) mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the CBSE Class 12 Science (PCM) mock test on mobile?
- Yes. CBSE Class 12 Science (PCM) mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the CBSE Class 12 Science (PCM) syllabus?
- The CBSE Class 12 Science (PCM) syllabus maps to its 4 sections: Physics (35 Q), Chemistry (35 Q), Mathematics (35 Q), English Core (30 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for CBSE Class 12 Science (PCM)?
- Eligibility for CBSE Class 12 Science (PCM) — age, qualification and number of attempts — is set by the official conducting body and can change each cycle, so always confirm the current official notification before applying. Wrexa Edge focuses on realistic CBSE Class 12 Science (PCM) practice: 10 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the CBSE Class 12 Science (PCM) exam and how should I prepare?
- Official CBSE Class 12 Science (PCM) exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 10 free CBSE Class 12 Science (PCM) mocks with instant scoring so you can track your readiness week by week.
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