Two glass jars A and B are filled with carbon dioxide and oxygen gases, respectively. In each jar, a lighted candle is placed simultaneously. In which jar will the candle remain lighted for a longer time and why?
Combustion:
In jar B, the candle remains lighted for a longer time as it contains oxygen which helps in the combustion of the candle.
Combustion reaction:
Thus, in jar B the candle remains lighted for a longer time as oxygen is required for the combustion while in jar A which is filled with carbon dioxide, the candle will go off after a time as carbon dioxide does not support combustion.