Question

8. \( CH _{3} CH _{2} CH _{2} CH \left( CH = CH _{2}\right) CH _{2} CH _{2} CH _{3} \) is a) 4-ethenylheptane b) 3-propylhex-1-ene c) 4-ethenylhexane d) 3-ethyenylheptane

Answer 1

ans is 3

first lowest locant rule 

ethene directly attached to main gr 

it is called as ethyenyl

Answer 2

Option : (B)

So, IUPAC Name - 3 - propylhex - 1 - ene