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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 nature of carbonyl group

Subtopic

Nomenclature and nature of carbonyl group under Aldehydes, Ketones and Carboxylic Acids for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    Which of the following correctly identifies the common name for Ethanoic acid?

    A.

    Formic acid

    B.

    Acetic acid

    C.

    Propionic acid

    D.

    Butyric acid

  2. 2.

    What is the IUPAC name for the aromatic aldehyde with a hydroxyl group at the ortho position (2hydroxybenzaldehyde2-\text{hydroxybenzaldehyde})?

    A.

    Salicylaldehyde

    B.

    Benzaldehyde

    C.

    2-Hydroxybenzaldehyde

    D.

    o-Tolualdehyde

  3. 3.

    In a ketone, the carbonyl group is bonded to:

    A.

    One carbon and one hydrogen

    B.

    Two hydrogen atoms

    C.

    Two carbon atoms

    D.

    One carbon and one hydroxyl group

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

Methods of preparation

Subtopic

Methods of preparation under Aldehydes, Ketones and Carboxylic Acids for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    The addition of a Grignard reagent to carbon dioxide followed by acidification is a common method to prepare:

    A.

    Aldehydes

    B.

    Ketones

    C.

    Carboxylic acids

    D.

    Alcohols

  2. 2.

    Dehydrogenation of ethanol over a copper catalyst at 573K573K produces which compound?

    A.

    Ethane

    B.

    Ethanal

    C.

    Ethene

    D.

    Ethanoic acid

  3. 3.

    What is the final product formed when propan-1-ol is oxidized using an excess of acidified KMnO4KMnO_4?

    A.

    Propanal

    B.

    Propanone

    C.

    Propanoic acid

    D.

    Ethanoic acid

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Methods of preparation 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 ICSE.

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Preview questions (no answers)

  1. 1.

    Which of the following compounds will yield a secondary alcohol upon reaction with a Grignard reagent?

    A.

    Formaldehyde

    B.

    Acetaldehyde

    C.

    Acetone

    D.

    Carbon dioxide

  2. 2.

    What is the IUPAC name for CH2=CHCHOCH_2=CH-CHO?

    A.

    Propanal

    B.

    Propenal

    C.

    Butenal

    D.

    Ethanal

  3. 3.

    Which of the following will react with Sodium hydrogen carbonate to evolve CO2CO_2 gas?

    A.

    Phenol

    B.

    Ethanol

    C.

    Ethanoic acid

    D.

    Acetone

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

Mechanism of nucleophilic addition

Subtopic

Mechanism of nucleophilic addition under Aldehydes, Ketones and Carboxylic Acids for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    In the reaction of an aldehyde with an alcohol, dry HClHCl is used to:

    A.

    Absorb water and shift the equilibrium to the right

    B.

    Act as a base

    C.

    Decrease the rate of reaction

    D.

    Oxidize the aldehyde

  2. 2.

    What is the characteristic geometry of the carbonyl carbon before any reaction takes place?

    A.

    Tetrahedral

    B.

    Trigonal planar

    C.

    Linear

    D.

    Octahedral

  3. 3.

    Identify the product of the reaction between methanal and methyl magnesium bromide followed by acidification.

    A.

    Methanol

    B.

    Ethanol

    C.

    Propan-2-ol

    D.

    Ethanal

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

Alpha hydrogen reactivity in aldehydes

Subtopic

Alpha hydrogen reactivity in aldehydes under Aldehydes, Ketones and Carboxylic Acids for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    What type of product is typically formed when an aldehyde with α\alpha-hydrogen is treated with dilute alkali?

    A.

    Carboxylic acid

    B.

    β\beta-hydroxy aldehyde

    C.

    Primary alcohol

    D.

    Alkane

  2. 2.

    Which compound reacts with dilute Ba(OH)2Ba(OH)_2 to give a β\beta-hydroxy aldehyde?

    A.

    Methanal

    B.

    Ethanal

    C.

    Chloral

    D.

    Trimethylacetaldehyde

  3. 3.

    Which of the following is true for the α\alpha-hydrogen reactivity in aldehydes?

    A.

    It requires a strong oxidizing agent

    B.

    It is driven by the stability of the enolate ion

    C.

    It only occurs in the presence of concentrated acids

    D.

    It leads to the formation of an ester

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Alpha hydrogen reactivity in aldehydes to practice offline. It includes additional chapter-level practice questions.

Uses of aldehydes and ketones

Subtopic

Uses of aldehydes and ketones under Aldehydes, Ketones and Carboxylic Acids for Grade 12 ICSE.

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Preview questions (no answers)

  1. 1.

    Which aromatic aldehyde is used as a fixative in the manufacture of soap perfumes?

    A.

    Benzaldehyde

    B.

    Formaldehyde

    C.

    Acetaldehyde

    D.

    Propanal

  2. 2.

    Acetone is used as a precursor for the production of which monomer used in high-performance coatings?

    A.

    Isoprene

    B.

    Methyl methacrylate

    C.

    Vinyl acetate

    D.

    Styrene

  3. 3.

    Formaldehyde is a component of which resin used to produce weather-resistant plywood?

    A.

    Phenol-formaldehyde resin

    B.

    Urea-formaldehyde resin

    C.

    Vinyl resin

    D.

    Polyester resin

Download the worksheet for Aldehydes, Ketones and Carboxylic Acids - Uses of aldehydes and ketones 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 ICSE.

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Preview questions (no answers)

  1. 1.

    Which property of the carboxyl group allows the hydrogen atom to be released easily as a proton?

    A.

    The electronegativity of the oxygen atoms

    B.

    The presence of the alkyl group

    C.

    The non-polar nature of the O-H bond

    D.

    The presence of only single bonds

  2. 2.

    What happens to the pHpH of the solution when CH3COONaCH_3COONa is added to CH3COOHCH_3COOH?

    A.

    It decreases

    B.

    It increases

    C.

    It remains the same

    D.

    It becomes 0

  3. 3.

    Which of the following ions is formed when propanoic acid loses a proton?

    A.

    Ethoxide

    B.

    Propanoate

    C.

    Acetate

    D.

    Propyl ion

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 (ICSE) | Krit.club