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Study the given figures carefully. ...

Study the given figures carefully.

Select the correct observation.

A

The flame finally goes off in all the three cases.

B

The flame flickers and produces smoke in all three cases.

C

Candle burns freely in I and II and flickers in III.

D

Candle burns freely in I.

Text Solution

Verified by Experts

The correct Answer is:
D
In I, air can enter the chimney from below hence, candle burns freely.
In II, air cannot enter the chimney from below hence, flame flickers and produces smoke.
In III, flame finally goes off because air is not available.
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