Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms?

Why is Wurtz reaction not preferred for preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.

The acid contains only one carbon atom is…..

Which reaction is used for converting a primary amide into a primary amine containing one carbon atom less than the parent amide?

Which of the following contain maximum number of atoms?

Which of the following methods of preparation of amines will not give same number of carbon atoms in the chain of amines as in the reactant?

Best method for preparing aliphatic primary amines from alkyl halides without changing the number of carbon atoms in the chain is

The reaction which is used for the preparation of amine having one carbon less than the starting material is

Which of the following contains the greatest number of oxygen atoms?