A burning candle is kept in a trough containing water. When an inverted jar is placed on the top of the candle, its flame goes out and the level of water inside the jar rises. What inference can be drawn from this observation?

Oxygen supports burning.

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Nitrogen supports burning.

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Volume of air inside the jar decreases.

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Water extinguishes the flame.

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Solution

The correct option is C Volume of air inside the jar decreases.

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Similar questions

Explain why, when a burning candle is covered with an inverted gas jar, the candle gets extinguished after some time.

Give reasons :

(a) Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.

(b) A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.

(d) Apparatus for laboratory preparation of hydrogen should be air tight and away from a naked flame.

In the given figure, a burning candle is kept in the trough containing water. It is put off after some time when covered by an inverted gas jar.

What can be concluded from the above activity?

Q. Assertion :When

H C l

in a jar is poured into a jar containing burning candle, the candle is put out. Reason:

H C l

is a fire extinguisher.

Q. When a burning candle is covered with an inverted lid, the flame goes off after some time. This is because of:

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