Question

An organic compound 'A' C₄H₈ on treatment with KMnO₄/H⁺ yields compound 'B' C₃H₆O. Compound 'A' also yields compound 'B' an ozonolysis. Compound 'A' is : 

(1) 2–Methylpropene 

(2) 1–Methylcyclopropane 

(3) But–2–ene 

(4) Cyclobutane 

Answer 1

Answer is :(1) 2–Methylpropene 

Answer 2

Correct answer is 2–Methylpropene.

a) CH₂=C(CH₃)-CH₃ on reaction with KMnO₄/H+ gives CH₃COCH₃ and CO_2, H₂O (HCOOH) 

b) CH₂=C(CH₃)-CH₃ on ozonolysis gives CH₃COCH₃ and HCHO

So, the compound A is 2–Methylpropene and Compound B is acetone.