NEET-UG and JEE Main Chemistry · Class 11
Ozonolysis and oxidation of alkenes — NEET & JEE Questions
Ozonolysis and oxidation of alkenes is a topic in Hydrocarbons, a Class 11 Chemistry chapter of the NEET-UG and JEE Main syllabus. TestBudy holds 12 published NEET-UG and JEE Main questions on Ozonolysis and oxidation of alkenes, each with the marking scheme of the real paper.
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Ozonolysis and oxidation of alkenes MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Ozonolysis of an alkene followed by reductive workup cleaves the C=C bond to form mainly
- A. carbonyl compounds
- B. alkanes only
- C. alcohols only
- D. amines
Ozonolysis is useful in structure determination because it reveals
- A. the substitution pattern around the original C=C bond
- B. only the molecular mass
- C. only the number of hydrogens in the whole molecule
- D. the boiling point
Cold dilute alkaline typically converts an alkene into
- A. a vicinal diol
- B. an alkane
- C. an amine
- D. a nitrile
Strong oxidative cleavage of an alkene differs from reductive ozonolysis because aldehyde fragments may be further oxidised to
- A. carboxylic acids
- B. alkanes
- C. amines
- D. ethers
Ozonolysis of ethene followed by reductive workup gives
- A. methanal
- B. ethanal
- C. propanone
- D. methanol
Reductive ozonolysis of propene gives
- A. methanal and ethanal
- B. two ethanal molecules
- C. methanal and propanone
- D. ethanoic acid and methanal
Ozonolysis of 2-methylpropene followed by reductive workup gives
- A. propanone and methanal
- B. ethanal and methanal
- C. two molecules of propanone
- D. propanone and methanol
An alkene rapidly decolourises cold dilute alkaline permanganate. This observation is consistent with
- A. oxidation of the C=C bond to a vicinal diol
- B. formation of an alkane without oxidation
- C. absence of unsaturation
- D. formation of an amide
An alkene gives only propanone on reductive ozonolysis. Which alkene is most consistent?
- A. 2,3-Dimethylbut-2-ene
- B. But-2-ene
- C. Propene
- D. 2-Methylpropene
An alkene gives ethanal as the only carbonyl product on reductive ozonolysis. Which alkene is indicated?
- A. But-2-ene
- B. Propene
- C. Ethene
- D. 2-Methylpropene
Common mistakes in Ozonolysis and oxidation of alkenes
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Uses carbonyl carbon count without reconstructing substituents on each original alkene carbon.
- Assumes strong oxidation preserves aldehydes formed in reductive ozonolysis.
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