KCET · Chemistry · General Organic Chemistry
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
- A geometrical isomerism
- B optical isomerism
- C neither optical nor geometrical isomerism
- D both optical and geometrical isomerism
Answer & Solution
Correct Answer
(B) optical isomerism
Step-by-step Solution
Detailed explanation
When acetaldehyde is treated with aqueous sodium hydroxide solution, it undergoes aldol condensation (because of the presence of \(\alpha-\mathrm{H}\) atom) as.
Since, the aldol formed contains one asymmetric carbon atom, it will show optical isomerism.
On heating, aldol loses water and gives an alkene.
The obtained alkene shows geometrical isomerism.
Since, the aldol formed contains one asymmetric carbon atom, it will show optical isomerism.
On heating, aldol loses water and gives an alkene.
The obtained alkene shows geometrical isomerism.
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