Free Carboxylic Acids MCQs with Answers
550 Carboxylic Acids MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
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Read the Carboxylic Acids notesFree MDCAT chapter notes with key terms550 questions · page 12 of 28
- A. Acetyl acetate
- B. Vinyl acetate
- C. Chloro acetate
- D. Benzyl acetate
Explanation: Polyvinyl acetate is a polymer of vinyl acetate monomer. The chemical formula for vinyl acetate is CH3COOCH=CH2, which contains a vinyl…
Correct answer: Vinyl acetate- A. 3-Chloropropanoic acid
- B. 2-Chloropropanoic acid
- C. 2-Chloro-1-propanoic acid
- D. Propyl carboxylic acid chloride
Explanation: The IUPAC name of the compound CICH₂CH₂COOH is 3-Chloropropanoic acid. Here's the explanation:- The longest carbon chain in the compound…
Correct answer: 3-Chloropropanoic acid- A. C17H33COOH
- B. C17H35COOH
- C. C7H3COOH
- D. C15H30COOH
Explanation: b) C17H35COOHExplanation: This option suggests that the formula of stearic acid is C17H35COOH. This is the correct answer.
Correct answer: C17H35COOH- A. Acidic cold KMnO4
- B. Warm Acidic KMnO4
- C. Warm alkaline KMnO4
- D. Alkaline cold KMnO4
Explanation: Oxidative cleavage of alkenes typically occurs in the presence of hot alkaline KMnO4 (potassium permanganate).When alkenes are treated…
Correct answer: Warm alkaline KMnO4- A. Formamide
- B. Acetamide
- C. Benzoic acid
- D. Acetaldehyde
Explanation: A. Formamide (Incorrect): Formamide is not a product of the hydrolysis of ethanenitrile (also known as acetonitrile).
Correct answer: Acetamide- A. CH3COOCH3
- B. CH3CH2OH
- C. CH3CH2COOH
- D. CH3COOOCH3
Explanation: The substance that produces carbon dioxide with sodium bicarbonate is CH3COOH ( Acetic acid).When carboxylic acid reacts with sodium…
Correct answer: CH3CH2COOH- A. sp²
- B. sp³
- C. sp
- D. None of these options is correct
Explanation: There are three kinds of hybridizations that a carbon atom may have in a compound: "sp3", "sp2", and "sp".
Correct answer: sp²- A. 16.6°C
- B. 18°C
- C. -20°C
- D. 10°C
Explanation: Its molecular weight is 60.052 g/mole and its boiling point (760 mm Hg) is 118.1° C whereas its freezing point is +16.6 °C.
Correct answer: 16.6°C- A. Jasmine
- B. Pineapple
- C. Banana
- D. Orange
Explanation: Amyl acetate (A-mil AS-uh-tate) is a colorless liquid with a distinctive banana-like flavor and odor.
Correct answer: Banana- A. Neutralization
- B. Esterification
- C. Oxidation
- D. All of these options are correct
Explanation: Being an acid, carboxylic acids can undergo neutralization reactions with bases, forming water and a salt of a weak acid.
Correct answer: Neutralization- A. Salt + water
- B. Salt
- C. Salt + H2 gas
- D. Salt + Alcohol
Explanation: Any metal and acid react to give a salt and hydrogen gas. Carboxylic acids are acids and they have the same chemical properties as an…
Correct answer: Salt + H2 gas- A. Ethyl acetate
- B. Acetamide
- C. Acetyl Halide
- D. Acetic anhydride
Explanation: Ethyl acetate, acetyl chloride and acetic anhydride can be prepared directly from acetic acid.
Correct answer: Acetamide- A. Pure liquid acetic acid at 17°C
- B. Pure solid acetic acid at 17°C
- C. Pure solid acetic acid at 118°C
- D. Pure solid acetic acid at -20 °C
Explanation: Pure acetic acid is known as glacial acetic acid because acetic acid on reaching the melting point forms a glacier and thus glacial acetic…
Correct answer: Pure solid acetic acid at 17°C- A. CH3
- B. C2H6
- C. CH2
- D. None of these options are correct
Explanation: Carboxylic acids on reduction with HI and red phosphorus give alkanes.During this reduction, the COOH group is reduced to CH3.
Correct answer: CH3- A. Acetic acid
- B. Butyric acid
- C. Propanoic acid
- D. All of these options are correct
Explanation: OPTION A: Acetic acid is used as a coagulant for latex in the rubber industry.Acetic acid on dissolution gives Hydrogen ions.Latex is the…
Correct answer: Acetic acid- A. 120°C
- B. 118°C
- C. 110°C
- D. 87°C
Explanation: Acetic acid - Latin word (acetum) means 'vinegar'.Acetic acid is the second simplest carboxylic acid (after formic acid).Acetic acid…
Correct answer: 118°C- A. Neoprene
- B. Chloroprene
- C. Silk
- D. Polystyrene
Explanation: Option A :Acetic acid is not used in making neoprene. Neoprene is a synthetic rubber that is made by polymerizing chloroprene.
Correct answer: Silk- A. Reduction
- B. Hydrolysis
- C. Dehydration
- D. Oxidation
Explanation: Oxidation is a gain in the number of oxygen or loss in hydrogen.
Correct answer: Oxidation- A. RCOOH
- B. ArCOOH
- C. PhCOOH
- D. None of these
Explanation: The general formula for aliphatic carboxylic acids is RCOOH, and R refers to the alkyl group.
Correct answer: RCOOH- A. From acetylene hydrogenation.
- B. from the oxidation of ethyl alcohol.
- C. from the oxidation of benzaldehyde.
- D. All of these
Explanation: Acetic acid is prepared by the Oxidation of ethyl alcohol. Ethyl alcohol (also known as ethanol) is oxidized to acetaldehyde using an…
Correct answer: from the oxidation of ethyl alcohol.