Question

An alkene X on ozonolysis gives a mixture of Propan-2-one and methanal. What is X?

• A. Propene
• B. 2-Methylpropene
• C. 2-Methylbut-1-ene
• D. 2-Methylbut-2-ene

Hint:

Ozonolysis breaks double bonds into carbonyl compounds—trace back the products to determine the alkene.

Answer 1

The Correct Option is B

Step 1: Ozonolysis Fundamentals
- Ozonolysis cleaves alkene double bonds, yielding aldehydes and ketones. 
- To determine the precursor alkene, reverse this fragmentation. 
Step 2: Determining Structure X 
The observed products are Propan-2-one (\( CH_3COCH_3 \)) and methanal (\( HCHO \)).
The singular alkene that yields these fragments upon ozonolysis is 2-Methylpropene (\( CH_3 - C(CH_3) = CH_2 \)).
Final Answer: The alkene is 2-Methylpropene.