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CBSE - Class 12 > Chemistry > Aldehydes Worksheets

Free CBSE - Class 12 Chemistry - Aldehydes worksheets

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Here is a Sample Worksheet for you to Practice. Download this worksheet to see the answers.

1.
Describe the following:
(i) Acetylation
2.
Describe the following:
(ii) Cannizzaro reaction
3.
Describe the following:
(iii) Cross aldol condensation
4.
Describe the following:
(iv) Decarboxylation
5.

Complete each synthesis by giving missing starting material, reagent or products

6.
Give plausible explanation for the following:
(i) Cyclohexanone forms cyanohydrin in good yield but 2,2,6-trimethylcyclo-hexanone does not.
7.
Give plausible explanation for the following:
(ii) There are two (–NH_{2}) groups in semicarbazide. However, only one is involved in the formation of semicarbazones.
8.
Give plausible explanation for the following:
(iii) During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, the water or the ester should be removed as soon as it is formed.
9.
An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.
10.
Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Why?
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Chapters in CBSE - Class 12 Chemistry

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Top Concept Videos in Chemistry Aldehydes

Carbonyl Compounds: Ketones Carboxylic Acids video thumbnail

Carbonyl Compounds: Ketones Carboxylic Acids

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