Which from following methods of structural formula representation uses conventionally a point for front carbon and a circle around it for rear carbon?

What is the number of moles of 'C' atoms present in $$\mathrm{n}$$ mole molecule of alkane if it exhibits three structural isomers?

Identify the chiral molecule from the following.

How many isomers of $$\mathrm{C}_4 \mathrm{H}_{11} \mathrm{~N}$$ are tertiary amines?