See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Alkene which on reductive ozonolysis given only ethanol is 2-butene. So, other isomers of this alkene are 3 2 O /Zn/H O 3 2 2 3 2 H C CH CH CH H C CH CH O H CH O           and C H3 C CH3 CH2 3 2 O /Zn/H O  C H3 C CH3 O H CH O    Hence, (A), (B) and (C) is correct answer.