NCERT Solutions class 12 Chemistry aldehydes ketones and carboxylic acid part 1

Table of Contents

NCERT Solutions class 12 Chemistry aldehydes ketones and carboxylic acid part 1 Class 12 Chemistry book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 12 Chemistry chapter wise NCERT solution for Chemistry part 1 and Chemistry part 2 for all the chapters can be downloaded from our website and myCBSEguide mobile app for free.

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NCERT Class 12 Chemistry Chapter-wise Solutions

1 – The Solid State
2 – Solutions
3 – Electrochemistry
4 – Chemical Kinetics
5 – Surface Chemistry
6 – General Principles and Processes of Isolation of Elements
7 – The p-Block Elements
8 – The d-and f-Blocks Elements
9 – Coordination Compounds
10 – Haloalkanes and Haloarenes
11 – Alcohols, Phenols and Ethers
12 – Aldehydes, Ketones and Carboxylic Acids
13 – Amines
14 – Biomolecules
15 – Polymers
16 – Chemistry in Everyday Life

CHAPTER TWELVE ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

12.1 Nomenclature and Structure of Carbonyl Group
12.2 Preparation of Aldehydes and Ketones
12.3 Physical Properties
12.4 Chemical Reacxtions
12.5 Uses of Aldehydes and Ketones
12.6 Nomenclature and Structure of Carboxyl Group
12.7 Methods of Preparation of Carboxylic Acids
12.8 Physical properties
12.9 Chemical Reactions
12.10 Uses of carboxylic Acids

NCERT Solutions class 12 Chemistry aldehydes ketones and carboxylic acid part 1

Chapter End Question

Part-1

1. What is meant by the following terms? Give an example of the reaction in each case.

(i) Cyanohydrin

(ii) Acetal

(iii) Semicarbazone

(iv) Aldol

(v) Hemiacetal

(vi) Oxime

(vii) Ketal

(viii) Imine

(ix) 2,4-DNP-derivative

(x) Schiff’s base

2. Name the following compounds according to IUPAC system of nomenclature:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

3. Draw the structures of the following compounds.

(i) 3-Methylbutanal

(ii) p-Nitropropiophenone

(iii) p-Methylbenzaldehyde

(iv) 4-Methylpent-3-en-2-one

(v) 4-Chloropentan-2-one

(vi) 3-Bromo-4-phenylpentanoic acid

(vii) p,p‘-Dihydroxybenzophenone

(viii) Hex-2-en-4-ynoic acid

4. Write the IUPAC names of the following ketones and aldehydes. Wherever possible, give also common names.

(i)

(ii)

(iii)

(iv) Ph-CH=CH-CHO

(v)

(vi) PhCOPh

5. Draw structures of the following derivatives.

(i) The 2,4-dinitrophenylhydrazone of benzaldehyde

(ii) Cyclopropanoneoxime

(iii) Acetaldehydedimethylacetal

(iv) Thesemicarbazone of cyclobutanone

(v) The ethylene ketal of hexan-3-one

(vi) The methyl hemiacetal of formaldehyde

6. Predict the products formed when cyclohexanecarbaldehyde reacts with following reagents.

(i) PhMgBr and then

(ii)Tollens’ reagent

(iii) Semicarbazide and weak acid

(iv)Excess ethanol and acid

(v) Zinc amalgam and dilute hydrochloric acid

7. Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.

(i) Methanal

(ii) 2-Methylpentanal

(iii) Benzaldehyde

(iv) Benzophenone

(v) Cyclohexanone

(vi) 1-Phenylpropanone

(vii) Phenylacetaldehyde

(viii) Butan-1-ol

(ix) 2, 2-Dimethylbutanal

8. How will you convert ethanal into the following compounds?

(i) Butane-1, 3-diol

(ii) But-2-enal

(iii) But-2-enoic acid

9. Write structural formulas and names of four possible aldol condensation products from propanal and butanal. In each case, indicate which aldehyde acts as nucleophile and which as electrophile.

10. An organic compound with the molecular formula forms 2, 4-DNP derivative, reduces Tollens’ reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzenedicarboxylic acid. Identify the compound.

NCERT Solutions class 12 Chemistry

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NCERT Solutions for Class 12 Chemistry

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