Which of the following chemicals are vastly used in gunpowder of fireworks?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e Potassium nitrate, sulphur and charcoal.
The chemicals commonly used in the gunpowder of fireworks include:
- Potassium nitrate (KNO3), also known as saltpeter.
- Charcoal (carbon).
- Sulfur (S).
These three components make up the classic gunpowder mixture used in fireworks, with potassium nitrate acting as the oxidizing agent, charcoal as the fuel, and sulfur as a catalyst to facilitate the reaction.