Fireworks on festival days are an example of which of the following?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Explosion
When a firework is lit, a sudden reaction takes place that gives out heat, light and sound, and a large amount of gas is released. Such a reaction is an explosion.
Why the other options are incorrect
Option (1) Rapid combustion — Incorrect. A substance burning rapidly but steadily with heat and light, such as cooking gas lit on a stove.
Option (2) Spontaneous combustion — Incorrect. A substance catching fire by itself without being lit, such as white phosphorus in air.
Option (4) None of these — Incorrect. Fireworks are the standard example of an explosion.