Read the following passage and answer the next five questions based on it. Aldehydes are generally more reactive than ketones in nucleophilic addition reactions due to steric and electronic reasons. Sterically, the presence of two large groups in ketones hinders the attack of nucleophile to carbonyl carbon than in aldehydes. Electronically, aldehydes are more reactive than ketones because two alkyl groups reduce the electrophilicity of the carbonyl carbon more effectively than in the former
Question: 1
Which among the following compound is formed when aldehyde reacts with HCN in presence of base? (A) Cyanide (B) Isocyanide (C) Cyanohydrin (D) Hydrogen cyanide Choose the correct answer from the options given below:
When an aldehyde reacts with HCN in the presence of a base, cyanohydrin is formed as a product due to nucleophilic addition.
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Question: 2
The correct decreasing order of basic strength of following amines in aqueous solution is: CH3NH2, (CH3)2NH, (CH3)3N, NH3 Choose the correct answer from the options given below:
In aqueous solution, the basic strength order for amines is influenced by inductive effects and steric factors. Dimethylamine \((\text{CH}_3)_2\text{NH}\) is more basic than methylamine \(\text{CH}_3\text{NH}_2\) and trimethylamine \((\text{CH}_3)_3\text{N}\), while ammonia \(\text{NH}_3\) is the least basic.
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Question: 3
A new C-C bond formation is possible in: (A) Cannizzaro reaction (B) Friedel-Crafts alkylation (C) Clemmensen reduction (D) Riemer-Tiemann reaction
Friedel-Crafts alkylation and Riemer-Tiemann reactions involve the formation of new C-C bonds. Cannizzaro reaction does not form a new C-C bond, and Clemmensen reduction only reduces carbonyl compounds.
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Question: 4
Which of the following will respond to Tollen’s test?
Methanoic acid (formic acid) is the only acid among the given options that contains an aldehyde group, making it capable of responding to Tollen’s test.
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Question: 5
The order of reactivity of the given haloalkanes towards nucleophile is: Choose the correct answer from the options given below:
