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Question

The longest chain has eight carbon atoms and thus the name of parent alkane compound is :

A
octane
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B
heptane
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C
nonane
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D
decane
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Solution

The correct option is A octane
The term heptane is used for alkane with seven carbon atoms, nonane for alkane with nine carbon atoms, decane is for alkane with ten carbon atoms, and octane for alkane with eight carbon atoms. In the given question, the longest chain has eight carbon atoms and, so the name of the parent compound would be octane. Hence option A is correct.

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