Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields

Four isomeric monochlorides.

To have four isomeric monochlorides, the isomer of the alkane of the molecular formula C5H12 should contain four different types of H-atoms in it. Therefore, the required isomer is 2-methylbutane. It can be observed that there are four different types of H-atoms labelled as a, b, c, and d in 2-methylbutane as shown below: -


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