Question

Answer question number 18. The question is in the image.

Answer 1

(4) CH3CHCH2

Step-by-step explanation

Unsaturated hydrocarbons are hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms.

So let us draw these structures quickly to see the one structure with a double or triple bond (unsaturated).

Only (4) CH3CHCH2 is the correct answer, (1) is NOT a hydrocarbon because it has chlorine.