Free Interactive Simulations · 27 Experiments Live
Virtual Science Lab
for NCERT, CBSE & UPSC
Browser-based interactive experiments for Physics, Chemistry, Biology, Electronics and Geography. Designed for NCERT Class 6–12 students, CBSE board aspirants and UPSC Civil Services preparation. Zero downloads. Completely free.
27Experiments
5Subjects
100%Free
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Interactive Science Lab
Science Simulations
Full-fidelity interactive experiments across Physics, Chemistry, Biology and Electronics. Aligned with NCERT Class 9–12 textbooks and the CBSE board practical syllabus.
Physics
Mechanics · Optics · Electricity
13 Sims
Chemistry
Reactions · Analysis · Thermodynamics
8 Sims
Biology
Organic Processes · Genetics
3 Sims
Electronics
Circuits · Semiconductors
3 Sims
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NCERT & CBSE Science Lab
NCERT & CBSE Aligned Experiments
Every simulation is mapped to specific NCERT chapters and CBSE board practical topics, from Class 9 to Class 12. Use these alongside your textbook for deeper conceptual understanding.
Class 9 & 10
Foundation experiments
Heat Transfer — Class 10 Science
Law of Reflection — Class 10 Physics
Momentum — Class 9 Science
Pollen Germination — Class 10 Biology
Class 11
Intermediate experiments
Oscillations — Class 11 Physics
Rotational Motion — Class 11 Physics
Calorimetry — Class 11 Chemistry
Surface Chemistry — Class 11 Chemistry
Class 12
Board exam practicals
Convex Lens — Class 12 Physics Board
Zener Diode — Class 12 Electronics
Meter Bridge — Class 12 Physics Board
Gametogenesis — Class 12 Biology
Geography
Earth Science · Physical Geography
1 Sim
UPSC Civil Services
UPSC Visual Study
Science and Geography simulations directly relevant to UPSC General Studies Papers 1 and 3. Visual learning accelerates comprehension of concepts that appear repeatedly in UPSC Prelims and Mains.
GS Paper 1 — Geography
Physical Geography
Visualise India's monsoon mechanism — South-West and North-East monsoons, jet streams, ITCZ movement and rainfall patterns. A frequently asked UPSC Prelims and Mains topic.
GS Paper 3 — Science & Tech
Physics & Technology
Concepts from Electronics, Optics and Electricity that appear under Science & Technology in UPSC GS Paper 3 — Semiconductors, PN Junction, Refractive Index and more.
GS Paper 3 — Environment
Chemistry & Environment
Chemical reactions, thermodynamics and environmental chemistry simulations relevant to UPSC General Studies — reaction kinetics, heat exchange and colloid chemistry.
Why visual learning helps UPSC aspirants
UPSC Prelims and Mains regularly test conceptual understanding of scientific phenomena — not just memorised facts. Interactive simulations help you visualise mechanisms like monsoon formation, semiconductor behaviour and optical physics, making revision faster and retention stronger. Use these alongside UPSC study notes for best results.
FAQ
Frequently Asked Questions
Everything you need to know about the Neptunevines Virtual Science Lab.
The Neptunevines Virtual Science Lab is a free, browser-based interactive simulation platform featuring 27 experiments across Physics, Chemistry, Biology, Electronics and Geography. It is designed for NCERT Class 6–12 students, CBSE board exam preparation, and UPSC Civil Services aspirants. No downloads or software installations are required — all simulations run directly in your web browser.
Yes, completely free. All 27 virtual science experiments are accessible at zero cost. There are no subscriptions, no paywalls and no hidden charges. The lab is funded by non-intrusive advertising, which keeps all content free for every student across India.
The lab covers NCERT Class 9, 10, 11 and 12 — including Physics (Mechanics, Optics, Electricity), Chemistry (Reactions, Thermodynamics, Analysis), and Biology (Reproduction, Genetics). Each simulation is mapped to specific NCERT chapters and aligns with the CBSE board practical syllabus.
The UPSC Visual Study section includes experiments mapped to UPSC General Studies Paper 1 (Geography — Indian Monsoon) and GS Paper 3 (Science & Technology — Semiconductors, Optics; Environment — Chemical Reactions, Thermodynamics). Visual learning through simulations accelerates retention of concepts that appear repeatedly in UPSC Prelims and Mains.
No. All virtual lab simulations are publicly accessible without an account. Creating a free Neptunevines account gives you access to additional features like UPSC study notes, NCERT summaries, State PSC material and mock tests — all at no cost.
Yes. All simulations are optimised for mobile and tablet browsers in addition to desktop. No app download is needed — access the full lab directly from your phone's browser on any device running a modern web browser.
Explore the full Neptunevines platform
UPSC notes, NCERT summaries, State PSC content and mock tests — everything free, alongside the virtual lab.