Assertion :Pentane and 2-methyl pentane are homolo-gues Reason: Pentane is a straight-chain alkane, while 2-methyl pentane is a branched-chain alkane

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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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
In a homologous series, alkanes differ by a $C H_{2}$ group. Pentane and 2-methyl pentane are homolo-gues. Pentane is a straight-chain alkane, while 2-methyl pentane is a branched-chain alkane. Both Assertion and Reason are correct and Reason is not the correct explanation for Assertion.

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ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

H_{2}

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(1 + \frac{P b}{R T})

H_{2}

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Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

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