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

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

Chapter 12: Aldehydes, Ketones and Carboxylic acids

Exercise
Exercise [Pages 280 - 281]

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board Chapter 12 Aldehydes, Ketones and Carboxylic acids Exercise [Pages 280 - 281]

Exercise | Q 1.1 | Page 280

Choose the most correct option.

In the following resonating structures A and B, the number of unshared electrons in valence shell present on oxygen respectively are

  • 2, 4

  • 2, 6

  • 4, 6

  • 6, 4

Exercise | Q 1.2 | Page 280

Choose the most correct option.

In the Wolff-Kishner reduction, alkyl aryl ketones are reduced to alkyl benzenes. During this change, ketones are first converted into

  • acids

  • alcohols

  • hydrazones

  • alkenes

Exercise | Q 1.3 | Page 280

Choose the most correct option.

Aldol condensation is

  • electrophilic substitution reaction

  • nucleophilic substitution reaction

  • elimination reaction

  • addition - elimination reaction

Exercise | Q 1.4 | Page 280

Choose the most correct option.

Which one of the following has the lowest acidity?

Exercise | Q 1.5 | Page 280

Choose the most correct option.

Diborane reduces

  • ester group

  • nitro group

  • halo group

  • acid group

Exercise | Q 1.6 | Page 280

Choose the most correct option.

Benzaldehyde does NOT show positive test with

  • Schiff reagent

  • Tollens' reagent

  • Sodium bisulphite solution

  • Fehling solution

Exercise | Q 2.01 | Page 280

Answer the following in one sentence.

What are aromatic ketones?

Exercise | Q 2.02 | Page 280

Answer the following in one sentence.

Is phenyl acetic acid an aromatic carboxylic acid?

Exercise | Q 2.03 | Page 280

Answer the following in one sentence.

Write reaction showing conversion of ethanenitrile into ethanal.

Exercise | Q 2.04 | Page 280

Answer the following in one sentence.

Predict the product of the following reaction:

\[\ce{CH3 - CH2 - COOCH3->[i) AIH(i-Bu)_2][ii) H3O+]}\]?

Exercise | Q 2.05 | Page 280

Answer the following in one sentence.

Name the product obtained by reacting toluene with carbon monoxide and hydrogen chloride in presence of anhydrous aluminium chloride.

Exercise | Q 2.06 | Page 280

Answer the following in one sentence.

Write reaction showing conversion of benzonitrile into benzoic acid.

Exercise | Q 2.07 | Page 280

Answer the following in one sentence.

Name the product obtained by the oxidation of 1,2,3,4-tetrahydronaphthalene with acidified potassium permanganate.

Exercise | Q 2.08 | Page 280

Answer the following in one sentence.

What is formalin?

Exercise | Q 2.09 | Page 281

Answer the following in one sentence.

Arrange the following compounds in the increasing order of their boiling points:

Formaldehyde, ethane, methyl alcohol.

Exercise | Q 2.1 | Page 281

Answer the following in one sentence.

Acetic acid is prepared from methyl magnesium bromide and dry ice in presence of dry ether. Name the compound which serves not only as reagent but also as a cooling agent in the reaction.

Exercise | Q 3.1 | Page 281

Answer in brief.

Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.

\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]

Exercise | Q 3.2 | Page 281

Answer in brief.

Formic acid is stronger than acetic acid. Explain.

Exercise | Q 3.3 | Page 281

Answer in brief.

What is the action of hydrazine on cyclopentanone in presence of KOH in ethylene glycol?

Exercise | Q 3.4 | Page 281

Answer in brief.

Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.

Exercise | Q 3.5 | Page 281

Answer in brief.

Aldehydes are more reactive towards nucleophilic addition reactions than ketones. Explain.

Exercise | Q 3.6 | Page 281

Answer in brief.

Write reaction showing the action of the following reagent on propanenitrile:

Dilute NaOH

Exercise | Q 3.6 | Page 281

Answer in brief.

Write reaction showing the action of the following reagent on propanenitrile:

Dilute HCl

Exercise | Q 3.7 | Page 281

Arrange the following carboxylic acids with increasing order of their acidic strength and justify your answer.

1) 

2)

3)

Exercise | Q 4.1 | Page 281

Describe Cannizzaro reaction

Exercise | Q 4.1 | Page 281

Write a note on Stephen reaction.

Exercise | Q 4.2 | Page 281

What is the action of the following reagent on toluene?

Alkaline KMnO4, dil. HCl and heat

Exercise | Q 4.2 | Page 281

What is the action of the following reagent on toluene?

CrO2Cl2 in CS2

Exercise | Q 4.2 | Page 281

What is the action of the following reagent on toluene?

Acetyl chloride in presence of anhydrous AlCl3.

Exercise | Q 4.3 | Page 281

Write the IUPAC name of the following structure:

Exercise | Q 4.3 | Page 281

Write the IUPAC name of the following structure:

\[\begin{array}{cc}\ce{COOH}\\|\phantom{......}\\\ce{COOH}\end{array}\]

Exercise | Q 4.4 | Page 281

Write reaction showing conversion of p-bromoisopropylbenzene into p-isopropylbenzoic acid (3 steps).

Exercise | Q 4.5 | Page 281

Write reaction showing aldol condensation of cyclohexanone.

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Chapter 12: Aldehydes, Ketones and Carboxylic acids

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

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 12 - Aldehydes, Ketones and Carboxylic acids

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board 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 Chemistry 12th Standard HSC for Maharashtra State Board 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. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Chemistry 12th Standard HSC for Maharashtra State Board 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 Balbharati 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 Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer Balbharati Textbook Solutions to score more in exam.

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