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Subject :NSO    Class : Class 8

A spoon is kept in contact with ice cubes for some time. Later, the same spoon was held over the flame of a small candle. The observation is shown in the figure.
What do you infer from the given figure?

A Spoon is an inflammable substance.
B Burning of candle is a spontaneous process.
C Carbon dioxide is a product of combustion.
D Water vapour is a product of combustion.

The correct answer is D . The combustion of Hydrocarbons produces water/water vapour .

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