Question

When a burning candle is covered with an inverted lid, the flame goes off after some time. This is because of:

• A. the absence of oxygen.
• B. the absence of water vapours.
• C. the absence of carbon monoxide.
• D. the absence of carbon dioxide.

Answer 1

The correct option is A the absence of oxygen.

Adequate supply of oxygen plays a very important role in the burning of a candle. Covering the candle with a lid cuts the supply of oxygen. As a result, the candle flame goes off.