CBSE 12th Standard Chemistry Subject Aldehydes , Ketones and Carboxylic Acids Ncert Exemplar 2 Mark Questions With Solution 2021
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CBSE 12th Standard Chemistry Subject Aldehydes , Ketones and Carboxylic Acids Ncert Exemplar 2 Mark Questions With Solution 2021
12th Standard CBSE
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Reg.No. :
Chemistry
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Explain the mechanism of a nucleophilic attack on the carbonyl group of an aldehyde or a ketone ?
(a) -
Write chemical equations when :
(i) Acetone reacts with ethanol.
(ii) Ethanal reacts with HCN.
(iii) Acetone reacts with HCN.
(iv) Acetone reacts with NaHSO3.
(v) Ethanal reacts with NaHSO3(a) -
State reasons for the following :
(i) Monochloroethanoic acid has a higher pKa value than dichloroethanoic acid.
(ii) Ethanoic acid is a weaker acid than benzoic acid.(a) -
Can Gattermann-Koch reaction be considered simular to Friedel-Crafts acylation? Discuss
(a) -
Ethyl benzene is generally prepared by acetylation of benzene followed by the reduction and not by direct alkylation. Think of a possible reason.
(a)
