Answer
See the structure for each alcohol below:
Work Step by Step
Question a: ‘hex’ means 6. So, no. of C in straight chain is 6. Step 1: Draw 6 C in a straight line and join them with single bond and numbering 1 to 6 from right to left. Step 2: ending name is 'anol'. It means there is an OH group and it will be at 1st position (because the name suggests 1-hexanol). Add OH group on no. 1 Carbon. Step 3: Fill the remaining valency of C with Hydrogen atom.
Question b: Step 1 - 'hept' means 7. Draw 7 C in a straight line and join them with single bond and numbering the C from right to left. Step 2: Add methyl group on no. 3 and no.4 Carbon (as the name suggests 3,4-dimethyl) and add OH group on 2nd Carbon (as the name suggests 2-heptanol). Step 3 - Fill the remaining hands of C with H atom.
Question c: Step 1 - 'oct' means 8. Draw 8 C in a straight line and join them with single bond and numbering the C atoms from right to left. Step 2: Add propyl group on no. 3 Carbon and OH group on no. 3 Carbon as substitute (as the name suggests 3-propyl-3-octanol). Step 3: Fill the remaining hands (valency) of C with H atom.
Question d: Step 1 - 'hex' means 6. Draw 6 C in a straight line and join them with single bond and numbering them from right to left. Step 2: Add OH group on no. 1 Carbon and add two methyl group on no. 2 Carbon and add two ethyl group on no. 3 Carbon (as the name suggests 3,3-diethyl-2,2-dimethyl-1-hexanol). Step 3: Fill the remaining valency of C with H atom.
See the steps in picturized form below:
