CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03

Official Class 12 Chemistry Worksheets: Unit 8 Aldehydes, Ketones and Carboxylic Acids

Access printable practice worksheets for Unit 8 Aldehydes, Ketones and Carboxylic Acids designed to align with the 2026-27 academic syllabus for Class 12 Chemistry. These structured exercises help students evaluate their conceptual understanding and improve exam readiness.

Chapter-wise Practice Material: Unit 8 Aldehydes, Ketones and Carboxylic Acids

Access the complete worksheet PDF for Unit 8 Aldehydes, Ketones and Carboxylic Acids below. Regular practice with these targeted questions builds familiarity with standard exam patterns and helps secure higher marks in final Chemistry evaluations.

ALDEHYDES, KETONES AND CARBOXYLIC ACIDS
 
1 Assertion and reasoning:
 
In the following questions a statement of assertion followed by a statement of reason is given.
 
Choose the correct answer out of the following choices.
 
(i) Assertion and reason both are correct and reason is correct explanation of assertion.
(ii) Assertion is correct statement but reason is wrong statement.
(iii) Assertion is wrong statement but reason is correct statement.
(iv) Assertion and reason both are correct statements but reason is not correct explanation of assertion.
 
Q1) Assertion: Alpha hydrogen atoms of aldehydes and ketones are acidic
       Reason: Aldehydes and ketones with alpha hydrogen undergo aldol condensation
 
Q2) Assertion: Benzaldehydes and formaldehyde undergo Cannizzaro reaction.
       Reason: Both are equally reactive
 
2 Write short notes on the following:
 
a. Clemmensen reduction b. Aldol Condensation c. Rosenmund reduction
d. Hell-Volhard-Zelinsky reaction
e. Cannizzaro reaction
f. Cross Aldol Condensation reaction
 
3 Give the structure of the following:
 
a. Hex-2-en-4-ynoic acid b. 3-hydroxy butanal
c. p-Nitropropiophenone d. 3-Bromo-4-phenylpentanoic acid
e. 3-Methylcyclohexane carbaldehyde
 
4 Explain the following mechanisms:
 
a) Nucleophilic attack on a carbonyl group of an aldehyde or a ketone.
b) Nucleophilic addition of Grignard reagent on a carbonyl group of an aldehydeor a ketone.
 
5 Distinguish the following:
 
a) Formic acid and Acetic acid           b) Phenol and benzoic acid
c) Benzaldehyde and Acetaldehyde    d) Benzaldehyde and acetophenone
 
6 Arrange the following in the increasing order of the property given as indicated:
 
a) Acetaldehyde, acetone, Di-ter-butylketone, methyl-ter-butylketone (Reactivity towards HCN)
b) 2-Bromobutanoic acid, 3-bromobutanoic acid, 2-methylpropanoic acid, butanoic acid (Acid strength)
c) CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3 (Boiling point)
d) Ethanal, Propanal, Propanone, Butanone (Nucleophilic addition)
e) Benzoic acid , 4- nitrobenzoic acid , 3,4- dinitrobenzoic acid , 4- methoxybenzoic acid (acid strength)
 
7 Effect the following conversions:
 
a. Propanone to propene b. Propanal to Butan-2-one
c. Ethanol to 3-hydroxy butanal
e.Styrene to benzoic acid
d. Benzaldehyde to 2-hydroxyphenyl aceticacid.
 
8 Account for the following:
a) Carboxylic acids do not give reactions of carbonyl group.
b) Aldehydes are more reactive to nucleophilic addition than ketones.
c) Carboxylic acids have higher boiling points than aldehyde, ketones and even alcohols
of comparable molecular mass.
d) Chloroacetic acid is stronger than acetic acid.
e) There is two –NH2 groups in semicarbazide , however only one is involved in the formation of semicarbazone.
 
9 a) An organic compound A 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 hydrogen sulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound A.
 
b) Write the chemical tests to distinguish between the following pairs of compounds:
i. Acetophenone and Benzophenone
ii. Ethanal and Propanal
 
Multiple choice questions:
 
1 Catalytic hydration of propyne gives
(a) Propanol   (b) Propanone   (c) Propene   (d) Propanal
 
2 Benzene is converted into benzaldehyde in the reaction
(a) Cannizzaro reaction (b) Etard reaction   (c) Gatterman –Koch reaction
(d) Rosenmund reaction
 
3 The most acidic in the following
(a) CH3COOH   (b) CF3COOH   (c) CCl3COOH  (d) CBr3COOH
 
4 Which compound forms silver mirror with Tollen’s reagent
(a) Alcohol   (b) Aldehyde   (c) Ketone   (d) Acid
 
5 The product of Wolff-Kishner reduction is
(a) Aldehyde   (b) Ketone   (c) Alkane   (d) Alcohol

 

Please click on below link to download CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set C

Free study material for Chemistry

Download CBSE Practice Material: Class 12 Chemistry Unit 8 Aldehydes, Ketones and Carboxylic Acids

Chapter Practice Questions for Class 12 Chemistry

Review targeted practice exercises for Class 12 Chemistry Unit 8 Aldehydes, Ketones and Carboxylic Acids. Curated to match official CBSE guidelines, these downloadable PDF sheets support daily revision and core concept reinforcement.

Expert Practice Material for Class 12 Chemistry

Each worksheet is structured around standard CBSE textbooks, allowing students to check their working steps and correct mistakes early in their revision.

Complete Your Chapter Revision

Follow up your worksheet practice by attempting the interactive online Chemistry MCQ test for this chapter to evaluate your execution speed. All platform resources are free to access.

FAQs

Where can I download the latest PDF for CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03?

You can download the teacher-verified PDF for CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03 from StudiesToday.com. These practice sheets for Class 12 Chemistry are designed as per the latest CBSE academic session.

Are these Chemistry Class 12 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 12.

Do you provide solved answers for CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03?

Yes, we have provided detailed solutions for CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03 to help Class 12 and follow the official CBSE marking scheme.

How does solving CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03 help in exam preparation?

Daily practice with these Chemistry worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 12 students get more marks in CBSE exams.

Is there any charge for the Class 12 Chemistry practice test papers?

All our Class 12 Chemistry practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set 03 without any registration.