Question

please answer this question it's very urgent ​

Answer 1

Answer:

a) presence of oxygen is more in set up 'a' as there is place for O2 to enter the hollow tube from below also.

b) there is no place from below as set up 'a' the, presence of O2 in set up 'b' is less so the fire goes off faster and produces smoke.

c) as the tube is blocked from all sides there is no place for oxygen to get inside the tube so the fire goes off within few seconds.

Hope this helps you!

Answer 2

Answer:

So your answer will be :-

(a) The candle is keep burning because the oxygen is continuously going through hollow from bottom.

(b) The flame is producing smoke due to the lack of oxygen in it and get extinguished soon.

(c) The candle get extinguished because there is no air (or oxygen) present in it because of the worden crates which covers it