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Aldehydes, Ketones and Carboxylic Acids

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Nomenclature and Structure of Carbonyl Group

Subtopic

Nomenclature and Structure of Carbonyl Group under Aldehydes, Ketones and Carboxylic Acids for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the IUPAC name of the following compound: HOOC−CH2−COOHHOOC-CH_{2}-COOH?

    A.

    Ethanedioic acid

    B.

    Propanedioic acid

    C.

    Butanedioic acid

    D.

    Malonic acid

  2. 2.

    How many σ\sigma and π\pi bonds are present in the C=OC=O part of the carbonyl group?

    A.

    Two σ\sigma bonds

    B.

    Two π\pi bonds

    C.

    One σ\sigma and one π\pi bond

    D.

    Three σ\sigma bonds

  3. 3.

    What is the IUPAC name of the compound CH3CH2CH2CH2CHOCH_{3}CH_{2}CH_{2}CH_{2}CHO?

    A.

    Butanal

    B.

    Pentanal

    C.

    Hexanal

    D.

    Pentan-2-one

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Nomenclature and Structure of Carbonyl Group to practice offline. It includes additional chapter-level practice questions.

Preparation of Aldehydes and Ketones

Subtopic

Preparation of Aldehydes and Ketones under Aldehydes, Ketones and Carboxylic Acids for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following reagents will convert an acyl chloride into a ketone?

    A.

    Grignard reagent followed by hydrolysis

    B.

    Dialkylcadmium

    C.

    DIBAL-H

    D.

    Pd/BaSO4Pd/BaSO_4

  2. 2.

    What is the product when but-1-yne is treated with HgSO4HgSO_4 and H2SO4H_2SO_4?

    A.

    Butanal

    B.

    Butan-2-one

    C.

    Butan-1-ol

    D.

    Butanoic acid

  3. 3.

    The reduction of a nitrile to an imine is the first step of which named reaction?

    A.

    Etard reaction

    B.

    Rosenmund reaction

    C.

    Stephen reaction

    D.

    Gatterman-Koch reaction

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Preparation of Aldehydes and Ketones to practice offline. It includes additional chapter-level practice questions.

Physical and Chemical Properties

Subtopic

Physical and Chemical Properties under Aldehydes, Ketones and Carboxylic Acids for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Dry distillation of calcium acetate gives:

    A.

    Formaldehyde

    B.

    Acetaldehyde

    C.

    Acetone

    D.

    Acetic acid

  2. 2.

    Gatterman-Koch reaction is used to synthesize:

    A.

    Ethanal

    B.

    Benzaldehyde

    C.

    Acetophenone

    D.

    Acetone

  3. 3.

    A ketone reacts with semicarbazide to form a:

    A.

    Hydrazone

    B.

    Semicarbazone

    C.

    Oxime

    D.

    Acetal

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Physical and Chemical Properties to practice offline. It includes additional chapter-level practice questions.

Nucleophilic Addition Reactions

Subtopic

Nucleophilic Addition Reactions under Aldehydes, Ketones and Carboxylic Acids for Grade 12 CBSE.

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Preview questions (no answers)

  1. 1.

    In the reaction of propanone with methyl magnesium bromide, the carbon of the Grignard reagent attacks:

    A.

    The methyl group of propanone

    B.

    The oxygen atom of propanone

    C.

    The carbonyl carbon of propanone

    D.

    The magnesium atom

  2. 2.

    Which group increases the reactivity of a carbonyl group towards nucleophilic addition when attached to the carbonyl carbon?

    A.

    Electron donating group

    B.

    Electron withdrawing group

    C.

    Large alkyl group

    D.

    Bulky aryl group

  3. 3.

    The reaction between a carbonyl compound and 2,4-DNP involves the elimination of:

    A.

    Oxygen gas

    B.

    Water

    C.

    Nitrogen gas

    D.

    Hydrogen gas

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Nucleophilic Addition Reactions to practice offline. It includes additional chapter-level practice questions.

Acidity of Carboxylic Acids

Subtopic

Acidity of Carboxylic Acids under Aldehydes, Ketones and Carboxylic Acids for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Carboxylic acids are known to be more acidic than many other organic compounds because they can easily donate a proton to form a resonance-stabilized anion. Based on the dissociation flowchart provided, what is the general chemical name for the anion represented as 'Species B'?

    A.

    Alkoxide ion

    B.

    Carboxylate ion

    C.

    Phenoxide ion

    D.

    Hydroxide ion

  2. 2.

    Among the following, which one does NOT react with sodium bicarbonate to give carbon dioxide?

    A.

    Benzoic acid

    B.

    Acetic acid

    C.

    Phenol

    D.

    Formic acid

  3. 3.

    Which of the following groups, if substituted in benzoic acid, will increase its KaK_{a} value?

    A.

    −OH-OH

    B.

    −OCH3-OCH_{3}

    C.

    −NO2-NO_{2}

    D.

    −NH2-NH_{2}

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Acidity of Carboxylic Acids to practice offline. It includes additional chapter-level practice questions.

Aldehydes, Ketones and Carboxylic Acids - Class 12 Chemistry (CBSE) | Krit.club