Class XII Chemistry IQs on Aldehydes, Ketones and Carboxylic Acids

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Question 1

Which among the following is not a method of preparation of aldehyde?

• AOxidation of alcohols
• BReduction of acid chloride
• CFriedel crafts acylation
• Dnone of these

Question 2

Identify the compound that produce red-brown precipitate with Fehling’s solution.

• A
• B
• C
• DBoth A and C

Question 3

From the compounds listed, identify the one that gives only Cannizzaro products and no aldol products.

• A2-methyl propanal
• BButanal
• CPropanal
• DAcetaldehyde

Question 4

Which among the following responds positively to tollen’s test:

• A
• B
• C
• D

Question 5

When ethyl acetate is treated with sodium ethoxide, and the resulting mixture contains

• Aethyl 3–oxobutanoate
• Bethyl acetoacetate
• Cacetoacetic ester
• Dall of these

Question 6

Which order is correct according to their acid strength?

• Aa > c > b
• Ba > b > c
• Cc > a > b
• Dc > b > a

Question 7

phenyl magnesium bromide + tert-butanol = product would be:

• ABenzene
• BPhenol
• CTert-butylbenzene
• DTert- butyl phenyl ether

Question 8

When phenol is treated with excess bromine water, it gives:

• AM-bromophenol
• BOrtho and para bromophenol
• C2,4-dibromophenol
• D2,4,6-tribromophenol

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