Class 10 Science
17 Practice Questions — The answers are hidden. Reveal them to check your answers. The Timed Test will be available in Phase 3.
A decomposition reaction splits one compound into two or more products. Example: heating limestone CaCO₃ → CaO + CO₂, or electrolysis of water.
Look for heat, light or electricity as the energy that breaks the reactant.
These practice sets use original GKSchools wording — they are not a verbatim dump of the NCERT textbook. “Important” means high-weight practice for the chapter, not a claim that these are previous-year exam questions.
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
After this page, use these three links — do not open a random page.
More sets from the same cluster — stay on this topic.
Timed papers with a scorecard — start any time, then return to a related quiz above.
