04
Let us try to find out, what is the effect of air on burning.
Activity: Observe the following experiment and answer the questions:
Case A
Case B
Plastic bottle
Plastic bottle
with holes
0
Trough
10
Watert
Higher
level of
water
I.
Why does the candle covered with bottle with no holes burns only for some time where as the candle
covered with bottle having holes continued to burn for long?
Why was there no rise in water level in case B?
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