Question

Read the following and answer the given questions:


While performing an experiment a student took a lighted candle, fixed it on a table and
covered the burning candle with a jar. As a result candle flame became sooty and
extinguishes after a few seconds.

i. Why does candle flame extinguish?


ii. Name the substance present in soot.


iii. Name the gas produced during incomplete combustion.


iv. What will happen to candle flame, if candle is not covered with a jar?​

Answer 1

Answer:

don't know the answer sorry

Answer 2

Answer:

i. The candle flame gets extinguished because when the candle is covered with the jar then,the candle first uses all the oxygen trapped in the jar, but now due to the lack of the oxygen supply the candle flame gets extinguished. It means that oxygen is very important for combustion or burning.

ii. unburnt carbon particles are present in the soot.

iii. The gas produced during incomplete combustion is carbon monoxide gas.

iv. If the candle is not covered with the jar then it will keep on burning as it will have a plenty of oxygen supply.