Assertion :
A wooden splint is set on fire and blown out, leaving a hot, glowing end. When the glowing splint is inserted into a sample of purified ${C O}_{2}$ , gas, it will reignite into a flame.
Reason: ${C O}_{2}$ gas contains oxygen.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect and the Reason is correct

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Solution

The correct option is D Assertion is incorrect and the Reason is correct
When splint is inserted into a sample of purified $C O_{2}$ , the flame stops because it stops the supply the $O_{2}$ .
$C O_{2}$ is composed of C and $O_{2}$ , hence it contains oxygen.

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