Question

Apurva covered a burning candle with a glass. What'll happen to the burning candle? .

• A. It will extinguish immediately
• B. It will continue burning
• C. The candle will melt
• D. It will burn for some time before being cut off

Answer 1

The correct option is D

It will burn for some time before being cut off

Explanation for the correct answer:

In the case of option D.

1. Fire is a type of chemical reaction that generates light and heat with the help of oxygen and fuel.
2. A burning candle needs to draw oxygen from the air in order to continue burning.
3. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen and the candle will burn for some time before being cut off.
4. Thus, the correct option is option D.

Explanation for the incorrect answers:

In the case of option A.

1. It will not extinguish immediately as there is some oxygen left in the empty glass.
2. Hence, option A is the incorrect option.

In the case of option B.

1. As discussed above, fire is a chemical reaction that needs oxygen.
2. As oxygen will be decreasing with respect to time, there is no question of burning continuously.
3. Hence, option B is the incorrect option.

In the case of option C.

1. There is no effect on the candle if we cover it with glass.
2. Only the flame will extinguish after some time.
3. The melting of the candle takes more time than the time for which oxygen lasts for burning.
4. Hence, option C is the incorrect option.

Thus, the correct option is option D.