The number of chain isomers of alkane containing six carbon atoms is

The number of chain isomers in alkane containing six carbon atoms is :

The number of water molecules formed in the combustion of one mole of alkane containing 'm' carbon atoms is

The least number of carbon atoms in alkane forming chain isomers is

Write the structural of all chain isomers of the saturated hydrocarbon containing six carbon atoms .Write their IUPAC name .

Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms ? Illustrate with one example.

What is the possibel number of optical isomer for a compound containing 2-dissimilar asymmetric carbon atom ?