NCERT Class XII Chemistry
Chapter - Alcohols, Phenols and Ethers
Questions with Solutions
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Question : 21
Total: 45
Name the reagents used in the following reactions :
(i) Oxidation of primary alcohol to carboxylic acid.
(ii) Oxidation of primary alcohol to aldehyde.
(iii) Bromination of phenol to 2,4,6-tribromophenol.
(iv) Benzyl alcohol to benzoic acid.
(v) Dehydration of propan-2-ol to propene.
(vi) Butan-2-one to butan-2-ol.
(i) Oxidation of primary alcohol to carboxylic acid.
(ii) Oxidation of primary alcohol to aldehyde.
(iii) Bromination of phenol to 2,4,6-tribromophenol.
(iv) Benzyl alcohol to benzoic acid.
(v) Dehydration of propan-2-ol to propene.
(vi) Butan-2-one to butan-2-ol.
Solution:
(i) Alkaline K M n O 4
(ii) Pyridinium chlorochromate in chloromethane( C H 2 C l 2 )
(iii)B r 2 ∕ H 2 O
(iv) AlkalineK M n O 4
(v) Conc.H 2 S O 4 H 3 P O 4
(vi)H 2 ∕ N i N a B H 4 L i A l H 4
(ii) Pyridinium chlorochromate in chloromethane
(iii)
(iv) Alkaline
(v) Conc.
(vi)
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