Of the five isomeric hexanes, the isomer which can give two mono-chlorinated compounds is
n-hexane
2, 3-dimethyl butane
2, 2-dimethyl butane
2-methyl pentane
2, 3-dimethyl butane has 2 types of hydrogens and hence give two monochlorinated compounds.
The hydrocarbon 2-methyl butane is an isomer of : (a) n-pentane (b) n-butane (c) propane (d) iso-butane