NCERT Class 12 Chemistry Solutions Aldehydes Ketones and Carboxylic Acids

NCERT Class 12 Chemistry Solutions Aldehydes Ketones and Carboxylic Acids - NCERT Solutions prepared for CBSE students by the best teachers in Delhi. 

Class XII  Chemistry

Chapter 12 – Aldehydes Ketones and Carboxylic Acids

Question 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                                                              (vii) Imine

(ix) 2,4-DNP-derivative                                       (x) Schiff’s base


Question 2:

Name the following compounds according to IUPAC system of nomenclature:






(vi) (CH3)3CCH2COOH

(vii) OHCC6H4CHO-p


Question 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


Question 4:

Draw structures of the following derivatives.

(i) The 2,4-dinitrophenylhydrazone of benzaldehyde

(ii) Cyclopropanone oxime

(iii) Acetaldehydedimethylacetal

(iv) The semicarbazone of cyclobutanone

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

(vi) The methyl hemiacetal of formaldehyde


Question 5:

Predict the products formed when cyclohexanecarbaldehyde reacts with following reagents.

(i) PhMgBr and then H3O+

(ii)Tollens’ reagent

(iii) Semicarbazide and weak acid

(iv)Excess ethanol and acid

(v) Zinc amalgam and dilute hydrochloric acid 


Students should free download the NCERT solutions and get better marks in exams. panel of teachers recommend students to practice questions in NCERT books and download NCERT solutions.



Click to View or Download pdf file
Click for more Chemistry Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Aryabhata Ganit Challenge 2020

Aryabhata Ganit Challenge (AGC) has been initiated by the CBSE Board to enhance mathematical abilities among students in the year 2019. In order to reach out to maximum students across the country, the Board will host the Aryabhata Ganit Challenge on DIKSHA platform...

Role of Word Limit in Written CBSE Examination

The intend of this article is to let us know the significance of writing within the prescribed word limit while attempting the CBSE Board Examination. Every single question in the board examination has a pre-specified word limit and every student needs to understand...

BRICS International Online Mathematics Competition

BRICSMATH.COM is an annual International Online Competition in Mathematics, for students of classes I – XII of 07 BRICS countries (Brazil, Russia, India, China and South Africa, Indonesia and Vietnam). The competition is held online on the website and...

Digital Marks Sheets Migration Certificates and Pass Certificates

CBSE pioneered in providing digital academic documents through its academic repository called “Parinam Manjusha” and DigiLocker.  As on now result data from 2004 till this year is available in the repository.  Approx. 12 crores digital academic documents are available...

Tricks for Utilization of additional time introduced in CBSE Board Exams

Tricks for Proper Utilization of Add-On 15 Minutes introduced in CBSE Board Exams The intend of this article is to share the best suggestions and guidelines to utilize the extra 15 minutes provided for reading the question paper in CBSE Board Examination. These extra...

Studies Today