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GyanMul Prep · NEB +2 · Science · Grade 12

Chemistry (Science, Grade 12)

Everything on these tabs is Chemistry (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Chapter 13 of 21 · Chemistry (Science, Grade 12)

Aldehydes and Ketones

8 topics
Board exam — Organic chemistry, 33 marks across 10 chapters
3 solved questions

The carbonyl group and the nucleophile that attacks it: preparation by oxidation and by four named routes, the addition and condensation reactions, and the tests that tell an aldehyde from a ketone.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Nomenclature; the structure and polarity of the carbonyl group
2Preparation by the oxidation of alcohols, by Rosenmund's reduction and by the oxo process
3Preparation from calcium salts of acids and by ozonolysis
4Nucleophilic addition: hydrogen cyanide, sodium bisulphite and Grignard reagents
5Condensation with 2,4-dinitrophenylhydrazine and other ammonia derivatives
6Aldol condensation and Cannizzaro's reaction
7Perkin's, Claisen's and benzoin condensations
8Tollens', Fehling's and iodoform tests; distinguishing aldehydes from ketones

GyanMul Prep · NEB +2 · Science · Grade 12

Chemistry (Science, Grade 12)

Everything on these tabs is Chemistry (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

Chapter 13 of 21 · Chemistry (Science, Grade 12)

Aldehydes and Ketones

8 topics
Board exam — Organic chemistry, 33 marks across 10 chapters
3 solved questions

The carbonyl group and the nucleophile that attacks it: preparation by oxidation and by four named routes, the addition and condensation reactions, and the tests that tell an aldehyde from a ketone.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Nomenclature; the structure and polarity of the carbonyl group
2Preparation by the oxidation of alcohols, by Rosenmund's reduction and by the oxo process
3Preparation from calcium salts of acids and by ozonolysis
4Nucleophilic addition: hydrogen cyanide, sodium bisulphite and Grignard reagents
5Condensation with 2,4-dinitrophenylhydrazine and other ammonia derivatives
6Aldol condensation and Cannizzaro's reaction
7Perkin's, Claisen's and benzoin condensations
8Tollens', Fehling's and iodoform tests; distinguishing aldehydes from ketones