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SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 12 - Aldehydes, Ketones and Carboxylic acids [Latest edition]

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12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com

Chapter 12: Aldehydes, Ketones and Carboxylic acids

Multiple choice questionsVery Short Answer QuestionsShort answer questions (Type-I)Short answer questions (Type-II)Long answer questions
Multiple choice questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 12 Aldehydes, Ketones and Carboxylic acids Multiple choice questions

1 Mark

Multiple choice questions | Q 1

Which of the following is the product of reaction of ethane nitrile with Grignard reagent followed by acid hydrolysis?

  • a ketone

  • an aldehyde

  • an acid

  • an acid chloride

Multiple choice questions | Q 2

_____________ reaction is used to synthesize straight alkyl substituted benzenes.

  • Etard

  • Rosenmund reduction

  • Stephen reaction

  • Wolf Kishner reduction

Multiple choice questions | Q 3

Ketones CANNOT be converted into carboxylic acid using _____________

  • Alkaline KMnO4

  • CrO3

  • dil. HNO3

  • hot and conc. HNO3

Multiple choice questions | Q 4

Correct order of acid strength for i) acetic acid ii) fluoroacetic acid iii) 4-Nitrobenzoic acid iv) 4-Methyl benzoic acid is _____________

  • i > ii > iii > iv

  • ii > iii > iv > i

  • iii > iv > i > ii

  • iv > i > ii > iii

Multiple choice questions | Q 5

Addition of sodium bisulphite to ethanol is ____________ type of reaction.

  • electrophilic addition

  • electrophilic substitution

  • nucleophilic addition

  • nucleophilic substitution

Multiple choice questions | Q 6

The following reactants CANNOT be converted into carboxylic acid?

  • Dry ice

  • Cyclohexane

  • Toluene

  • Cyclohexene

Multiple choice questions | Q 7

The following compounds will give positive Fehling’s test.

  • Propanone

  • Pentan-3-one

  • Butanone

  • Butanal

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Very Short Answer Questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 12 Aldehydes, Ketones and Carboxylic acids Very Short Answer Questions

1 mark

Very Short Answer Questions | Q 1

Write IUPAC name of Phthaldehyde?

Very Short Answer Questions | Q 2

What is substituted imine called?

Very Short Answer Questions | Q 3

Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.

Very Short Answer Questions | Q 4

Write another name of disproportionation reaction?

Very Short Answer Questions | Q 5

Write the number of products when a mixture of ethanal and propanal is reacted with dilute alkali?

Very Short Answer Questions | Q 6

Write the structure of the product formed when carboxylic acid is heated with a dehydrating agent like P2O5

Very Short Answer Questions | Q 7

Write the reducing agent which CANNOT reduce –COOH group.

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Short answer questions (Type-I)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 12 Aldehydes, Ketones and Carboxylic acids Short answer questions (Type-I)

2 Marks

Short answer questions (Type-I) | Q 1

Write Classification of aliphatic ketones with suitable example

Short answer questions (Type-I) | Q 2

What is the action of Grignard reagent on benzonitrile?

Short answer questions (Type-I) | Q 3

Carboxylic acids have higher boiling points than those of ethers. Give reason.

Short answer questions (Type-I) | Q 4

Describe Cannizzaro reaction

Short answer questions (Type-I) | Q 5.1

What is the action of following on proponal?

Hydroxyl amine

Short answer questions (Type-I) | Q 5.2

What is the action of following on proponal?

Hydrazine

Short answer questions (Type-I) | Q 6.1

Write the preparation reactions for acid amide from the following.

Carboxylic acid

Short answer questions (Type-I) | Q 6.2

Write the preparation reactions for acid amide from the following.

Acid chloride

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Short answer questions (Type-II)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 12 Aldehydes, Ketones and Carboxylic acids Short answer questions (Type-II)

3 marks

Short answer questions (Type-II) | Q 1.1

What is the action of following reagents on ethanoic acid?

SOCl2/heat

Short answer questions (Type-II) | Q 1.2

What is the action of following reagents on ethanoic acid?

sodalime/heat

Short answer questions (Type-II) | Q 1.3

What is the action of following reagents on ethanoic acid?

P2O5/heat

Short answer questions (Type-II) | Q 2

Explain aldol condensation reaction in detail.

Short answer questions (Type-II) | Q 3.1

Write reactions for the following conversions.

Benzene to Benzaldehyde

Short answer questions (Type-II) | Q 3.2

Write reactions for the following conversions.

Propanone to Propane

Short answer questions (Type-II) | Q 3.3

Write reactions for the following conversions.

4-Nitrobenzoic acid to Nitrobenzene

Short answer questions (Type-II) | Q 4.1

Explain haloform reaction with suitable example.

Short answer questions (Type-II) | Q 4.2

Write a reaction to distinguish acetaldehyde from acetone

Short answer questions (Type-II) | Q 5.1

Write the IUPAC name of mesityl oxide.

Short answer questions (Type-II) | Q 5.2

What is the action of following on proponal?

Hydroxyl amine

Short answer questions (Type-II) | Q 5.2

What is the action of following reagents on acetaldehyde?

Acidified potassium dichromate

Short answer questions (Type-II) | Q 6.1

Write chemical reactions to convert –COOH group of acetic acid into the following.

CH4

Short answer questions (Type-II) | Q 6.2

Write chemical reactions to convert –COOH group of acetic acid into the following.

C2H5OH

Short answer questions (Type-II) | Q 6.3

Write chemical reactions to convert –COOH group of acetic acid into the following.

CH3COCl

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Long answer questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 12 Aldehydes, Ketones and Carboxylic acids Long answer questions

4 marks

Long answer questions | Q 1.1

Draw structure of salicylaldehyde.

Long answer questions | Q 1.2

Write reaction for preparation of acetophenone from benzoyl chloride.

Long answer questions | Q 1.3

Explain the acidic nature of carboxylic acids.

Long answer questions | Q 2.1

Write reactions for the action of the following reagents on p-chlorobenzaldehyde.

Ethane-1,2-diol in presence of dry HCl.

Long answer questions | Q 2.1

Write reactions for the action of the following reagents on p-chlorobenzaldehyde.

Tollen’s reagent

Long answer questions | Q 2.1

Write reactions for the action of the following reagents on p-chlorobenzaldehyde.

Phenyl hydrazine

Long answer questions | Q 2.2

Write reagent for conversion of alkyl nitrile into aldehyde.

Long answer questions | Q 3.1

What are aliphatic aldehydes?

Long answer questions | Q 3.2

Complete the following sequence of reactions and write structures for A, B, C.

\[\ce{Dry ice ->[i. Dry ether][ii. Hydrolysis] A ->[PCl5] B ->[H2(gas)][Pd - BaSO4] C}\]

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Chapter 12: Aldehydes, Ketones and Carboxylic acids

Multiple choice questionsVery Short Answer QuestionsShort answer questions (Type-I)Short answer questions (Type-II)Long answer questions
12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 12 - Aldehydes, Ketones and Carboxylic acids

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 12 (Aldehydes, Ketones and Carboxylic acids) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board 12th Standard HSC Chemistry Maharashtra State Board 2021 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. SCERT Maharashtra Question Bank textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 12 Aldehydes, Ketones and Carboxylic acids are Introduction of Aldehydes, Ketones and Carboxylic Acids, Classification of Aldehydes, Ketones and Carboxylic Acids, Nomenclature of Aldehydes, Ketones and Carboxylic Acids, Preparation of Aldehydes and Ketones, Preparation of Carboxylic Acids, Physical Properties, Polarity of Carbonyl Group, Chemical Properties of Aldehydes and Ketones, Chemical Properties of Carboxylic Acids, Chemical Reactions of Aldehydes and Ketones - Reactions Due to A-hydrogen.

Using SCERT Maharashtra Question Bank 12th Board Exam solutions Aldehydes, Ketones and Carboxylic acids exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in SCERT Maharashtra Question Bank Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer SCERT Maharashtra Question Bank Textbook Solutions to score more in exam.

Get the free view of chapter 12 Aldehydes, Ketones and Carboxylic acids 12th Board Exam extra questions for 12th Standard HSC Chemistry Maharashtra State Board 2021 and can use Shaalaa.com to keep it handy for your exam preparation

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