On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of the non-availability of

oxygen

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water vapours

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carbon dioxide

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wax

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Solution

The correct option is A oxygen
During combustion, oxygen in the atmosphere combines with substance to produce heat and light.
$substance + O_{2} \to Heat + light + gases (C O_{2})$
As oxygen is needed for burning the candle, but oxygen is limited inside the inverted tumbler and its amount decreases as the candle burns. So, the flame extinguishes after some time.

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Role of Oxygen

Standard VI Chemistry

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On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of the non-availability of​

On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of the non-availability of