Assertion :IUPAC names of the isomers of $C_{4} H_{10}$ are butane and 2-methyl propane. Reason: Isomerism is the existence of molecules that have the same numbers of the same kinds of atoms (and hence the same formula) but differ in chemical and physical properties.

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
$\begin{matrix} The correct reason is butane and 2-methyl propane are chain isomers. Therefore Reason is not correct explanation for Assertion. \end{matrix}$

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Assertion :IUPAC names of the isomers of C4H10 are butane and 2-methyl propane. Reason: Isomerism is the existence of molecules that have the same numbers of the same kinds of atoms (and hence the same formula) but differ in chemical and physical properties.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion The correct reason is butane and 2-methyl propane are chain isomers. Therefore Reason is not correct explanation for Assertion.

Assertion :IUPAC names of the isomers of $C_{4} H_{10}$ are butane and 2-methyl propane. Reason: Isomerism is the existence of molecules that have the same numbers of the same kinds of atoms (and hence the same formula) but differ in chemical and physical properties.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
$\begin{matrix} The correct reason is butane and 2-methyl propane are chain isomers. Therefore Reason is not correct explanation for Assertion. \end{matrix}$