In an experiment, a lighter is brought in contact with a funnel contaning a gas. The lighter burns with a bright flame. Presence of which gas is confirmed in this experiment?

Carbon dioxide

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Oxygen

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Water vapour

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Argon

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Solution

The correct option is B
Oxygen

Presence of oxygen can be confirmed with this experiment. This is because oxygen is a supporter of combustion due to which the lighter burnt with a bright flame. In the absence of oxygen, the lighter would have never burnt.

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A metal on reaction with an acid, liberates a gas which gives a pop sound when brought in contact with a flame. Identify the gas?

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