What will happen if we cover a burning candle with a glass jar?

Correct option is C

The correct answer is (c) It will stop burning.

When a burning candle is covered with a glass jar, the supply of oxygen inside the jar becomes limited. As the candle burns, it consumes the available oxygen. Once the oxygen is exhausted, the flame goes out because combustion cannot continue without oxygen.

Information Booster

• Combustion Process: Oxygen is essential for the chemical reaction of combustion, which produces heat and light.
• Effect of Limited Oxygen: The flame dims and eventually extinguishes when oxygen levels drop below the required threshold.
• Glass Jar's Role: It acts as a barrier, preventing the inflow of fresh air and oxygen, thereby halting the combustion process.
• Practical Use: This principle is used in extinguishing small fires by covering them with a lid or fire blanket to cut off the oxygen supply.