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 13 of 28
- A. Milk
- B. Butter
- C. Cheese
- D. None of these
Explanation: Because the word butyrum is latin word which is used for butter in simple English.Common name for butyric acid in lattin language is…
Correct answer: Butter- A. Polarity of carbonyl group
- B. Due to methyl group
- C. Due to H-Bonding
- D. Due London forces
Explanation: The boiling point depends upon intermolecular hydrogen bonding. The molecular mass determination in non-polar solvents like benzene shows…
Correct answer: Due to H-Bonding- A. Propanoic acid
- B. Butanoic acid
- C. Ethanoic acid
- D. Methanoic acid
Explanation: IUPAC name of acetic acid is ETHANOIC ACID(CH3COOH).A,B,D are incorrect This is an exact information given in ptb and ftb and needs to be…
Correct answer: Ethanoic acid- A. Acetic acid
- B. Propanoic acid
- C. Formic acid
- D. Picric acid
Explanation: Picric acid is not a carboxylic acid.Picric acid has no carboxyl group. It is 2,4,6-trinitrophenol.
Correct answer: Picric acid- A. Alkoxy acid
- B. Alkanoic acid
- C. Alkyl carboxylic acid
- D. Alkoxylate acid
Explanation: IUPAC nomenclature for carboxylic acids works in the following manner;The "Alkanoic" part of a carboxylic acid is derived from the longest…
Correct answer: Alkanoic acid- A. Stearic acid
- B. Butyric acid
- C. Maleic acid
- D. Lactic acid
Explanation: Option D is correct as the common name of 2 hydroxy propanoic acid is "lactic acid" with a formula C3H6O3.
Correct answer: Lactic acid- A. Propanol
- B. Ethanal
- C. Ethanol
- D. Ethane
Explanation: Option C is correct since the reduction is the addition of hydrogen to a compound.
Correct answer: Ethanol- A. COOH
- B. -COOC
- C. -CHO
- D. -COH
Explanation: Option ACarboxylic acids have functional group of CARBOXYL GROUP (-COOH) thus option A is the right answer
Correct answer: COOH- A. Acetic acid
- B. Butyric acid
- C. Propanoic acid
- D. All of these
Explanation: Option A is correct since ethanoic acid is an organic acid. It ionizes in water to produce hydrogen ions.
Correct answer: Acetic acid- A. Esters
- B. Nitriles
- C. Ketones
- D. Salts
Explanation: Salts are also a major product of the reaction of carboxylic acids. When a carboxylic acid reacts with a base, such as sodium hydroxide…
Correct answer: Salts- A. Carbonyl group
- B. Ester and Alkyl halide
- C. Carboxylic acid
- D. Carboxylic acid and Amine functionality
Explanation: Amino acids are natural compounds composed of amine (-NH2) and carboxylic acid (-COOH) functional groups, linked to the same carbon…
Correct answer: Carboxylic acid and Amine functionality- A. 16.60C
- B. 180C
- C. -200C
- D. 100C
Explanation: The freezing point of acetic acid is 16.6 °C (fact).
Correct answer: 16.60C- A. Acid halides
- B. Acid carbonyls
- C. Esters
- D. Acid amides
Explanation: Among the options given, esters are commonly used as flavoring agents. Esters are derivatives of carboxylic acids in which the hydroxyl…
Correct answer: Esters- A. CH3COOCH3
- B. CH3CH2OH
- C. CH3CH2COOH
- D. CH3COOOCH3
Explanation: The correct option is:CH3CH2COOH (Ethanoic acid)The reaction can be represented as follows:CH3CH2COOH + NaHCO3 → CH3CH2COONa + H2O + CO2
Correct answer: CH3CH2COOH- A. RCOOH
- B. ArCOOH
- C. PhCOOH
- D. None of these options are correct
Explanation: The general formula of aliphatic carboxylic acid is RCOOH. Option B) It is the general formula of aliphatic carboxylic acids.
Correct answer: RCOOH- A. CH3COOCH3
- B. CH3CH2OH
- C. CH3CH2COOH
- D. CH3OOCH3
Explanation: acids are compounds that evolve CO2 when reacted with carbonates and bicarbonatesCarboxylic acids are strong acids and can evolve carbon…
Correct answer: CH3CH2COOH- A. Butanoic acid
- B. Propionic acid
- C. Phthalic acid
- D. Acetic acid
Explanation: Fatty acids are in fact carboxylic acids with long aliphatic chains, which can be saturated (containing only C-C single bonds) or…
Correct answer: Phthalic acid- A. Hydrochloric acid
- B. Acetic acid
- C. Sulfuric acid
- D. Lime water
Explanation: A weak acid is a species that only partially ionizes in water, as opposed to the complete ionization of strong acids.
Correct answer: Acetic acid- A. HCOOC2H5
- B. CH3―CH=CH2
- C. CH3CH2OH
- D. H3C―CH2―COOH
Explanation: H3C―CH2―COOH: This structure represents propanoic acid, which is an organic acid.
Correct answer: H3C―CH2―COOH- A. H2SO4 / HgSO4
- B. V2O5
- C. LiAlH4
- D. K2Cr2O7 /H2SO4
Explanation: LiAlH4 : Lithium aluminum hydride (LiAlH4) is a powerful reducing agent commonly used to convert carbonyl compounds, including carboxylic…
Correct answer: LiAlH4