Types of chemical reactions (atoms as coloured balls)रासायनिक अभिक्रियाओं के प्रकार

NCERT Section 1.2 · interactive diagram

Parts and their functions

• Combination reaction (संयोजन अभिक्रिया) — Two or more reactants form a single product. e.g. CaO + H₂O → Ca(OH)₂ (+ heat).
• Decomposition reaction (वियोजन अभिक्रिया) — A single reactant breaks down into simpler products — needs heat, light or electricity.
• Displacement reaction (विस्थापन अभिक्रिया) — A more reactive element pushes out a less reactive element from its compound (Fe displaces Cu).
• Double displacement reaction (द्विविस्थापन अभिक्रिया) — Two compounds exchange their ions. Often an insoluble solid (precipitate) forms, e.g. BaSO₄.

Original diagram drawn by Simple Learning Hub, based on NCERT Section 1.2. Report a mistake