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

Access the latest CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set C. We have provided free printable Class 12 Chemistry worksheets in PDF format, specifically designed for Unit 8 Aldehydes, Ketones and Carboxylic Acids. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Unit 8 Aldehydes, Ketones and Carboxylic Acids Chemistry Practice Worksheet for Class 12

Students should use these Class 12 Chemistry chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Unit 8 Aldehydes, Ketones and Carboxylic Acids, to help you prepare for school tests and final examination. Regular practice of these Class 12 Chemistry questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

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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

~ Class 12 Chemistry (Old Chapters)
CBSE Class 12 Chemistry Chemistry in Everyday Life Question Bank
CBSE Class 12 Chemistry Chemistry in Everyday Life Worksheet Set A
CBSE Class 12 Chemistry Chemistry in Everyday Life Worksheet Set B
CBSE Class 12 Chemistry General principles and Processes of isolation of elements Question Bank
CBSE Class 12 Chemistry General Principles and Processes of Isolation of Elements Worksheet Set A
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set B
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set C
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set D
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set E
CBSE Class 12 Chemistry In Everyday Life Question Bank
CBSE Class 12 Chemistry In Everyday Life Worksheet Set A
CBSE Class 12 Chemistry Polymers Worksheet Set A
CBSE Class 12 Chemistry Polymers Worksheet Set B
CBSE Class 12 Chemistry Polymers Worksheet Set C
CBSE Class 12 Chemistry Polymers Worksheet Set D
CBSE Class 12 Chemistry Solid State Question Bank
CBSE Class 12 Chemistry Solid State Question Bank Set A
CBSE Class 12 Chemistry Solid State Question Bank Set B
CBSE Class 12 Chemistry Solid State Worksheet
CBSE Class 12 Chemistry Surface Chemistry Question Bank
CBSE Class 12 Chemistry Surface Chemistry Question Bank Set A
CBSE Class 12 Chemistry Surface Chemistry Question Bank Set B
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set A
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set B
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set C
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set D
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set E
CBSE Class 12 Chemistry The P Block Elements Question Bank
CBSE Class 12 Chemistry The P Block Elements Question Bank Set A
CBSE Class 12 Chemistry The P Block Elements Question Bank Set B
CBSE Class 12 Chemistry The p Block Elements Worksheet Set A
CBSE Class 12 Chemistry The p Block Elements Worksheet Set B
CBSE Class 12 Chemistry The p Block Elements Worksheet Set C
CBSE Class 12 Chemistry The P Block Elements Worksheet Set E
CBSE Class 12 Chemistry The P Block Elements Worksheet Set F
CBSE Class 12 Chemistry The Solid State Worksheet Set A
CBSE Class 12 Chemistry The Solid State Worksheet Set B

Unit 8 Aldehydes, Ketones and Carboxylic Acids CBSE Class 12 Chemistry Worksheet

Students can use the Unit 8 Aldehydes, Ketones and Carboxylic Acids practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Chemistry. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Unit 8 Aldehydes, Ketones and Carboxylic Acids

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Extra Practice for Chemistry

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