Acetaldehyde undergoes polymerization with conc. H2SO4 and form _?
Correct answer: B. Paraldehyde
- A. Acetylides
- B. Paraldehyde
- C. Bakelite
- D. Meta acetaldehyde
Explanation
Acetaldehyde, under certain conditions like concentrated sulfuric acid, can polymerize to form paraldehyde. Paraldehyde is the cyclic trimer of acetaldehyde. When acetaldehyde undergoes polymerization, it can form paraldehyde, which is a cyclic trimeric form of acetaldehyde. Therefore, option b is correct.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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