Mark the incorrect statement about Aldehydes and Ketones:
Correct answer: B. Ketones on reduction with NaBH4/H3O+ give 2o alcohol
- A. Aldehydes on reduction with NaBH4/H3O+ give 1o alcohol
- B. Ketones on reduction with NaBH4/H3O+ give 2o alcohol
- C. Aldehydes on reduction with N2H4/KOH gives alkane
- D. All of these
Explanation
Option B is correct.No, ketones on reduction with NaBH4/H3O+ do not give 2o alcohols. The reaction of ketones with NaBH4/H3O+ is a reduction reaction. In a reduction reaction, a reducing agent adds hydrogen atoms to a molecule. In this case, the reducing agent is NaBH4, and the hydrogen atoms are added to the carbonyl carbon of the ketone.
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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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