Answer
The structural formulas of the given compounds are as follows:
Work Step by Step
a) Word root here is 'prop'. It means 3 C in straight chain. Draw 3 C in a straight chain and numbering them from 1 to 3 from either terminal side. Now, '2-methyl' means one methyl group is present at C2 position. Put one $CH_{3}$ group at C2 position and remaining valency of C atoms is filled with H.
b) 'but' means 4 C in straight chain. Draw 4 C in straight chain and numbering them from 1 to 4. '2-methyl' means one methyl group is present at C2 position. Put one $CH_{3}$ group at C2 position and remaining valency of C atoms is filled with H.
c) 'pent' means 5 C in straight chain. Draw 5 C in straight chain and numbering them from 1 to 5. '2-methyl' means one methyl group is present at C2 position. Put one $CH_{3}$ group at C2 position and remaining valency of C atoms is filled with H.
d) 'hex' means 6 C in straight chain. Draw 6 C in straight chain and numbering them from 1 to 6. '2-methyl' means one methyl group is present at C2 position. Put one $CH_{3}$ group at C2 position and remaining valency of C atoms is filled with H.
