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 26 of 28
- A. Alanine
- B. Glycine
- C. Aspartic acid
- D. Aniline
Explanation: Aniline is not an amino acid. It is an organic compound consisting of a benzene ring with an amino group (-NH2) attached to it.
Correct answer: Aniline- A. CnHnCOOH
- B. CnH2n+1COOH
- C. CnH2nCOOH
- D. CnH2n-2COOH
Explanation: CnH2n+1COOH, is the correct general formula for monocarboxylic acids. This formula represents a carboxylic acid where there is a carbon…
Correct answer: CnH2n+1COOH- A. Formic acid
- B. Oxalic acid
- C. Carbonic acid
- D. Acetic acid
Explanation: Acetic acid is correct. Acetic acid, also known as ethanoic acid, is used in the manufacture of synthetic fibers, particularly in the…
Correct answer: Acetic acid- A. She said they had texted each other earlier in the day to say they loved each other.
- B. She said they had texted one the other earlier in the day to say they loved each other.
- C. She said they had texted each other earlier in the day to say they loved ourselves.
- D. She said they had texted each other earlier in the day to say they loved each the other.
Explanation: "Each other" is used correctly to indicate reciprocal action between the two parties involved.
Correct answer: She said they had texted each other earlier in the day to say they loved each other.- A. Unfortunately, I had only a little friends those days, and they did not help me.
- B. Unfortunately, I had only few friends those days, and they did not help me.
- C. Unfortunately, I had only the few friends those days, and they did not help me.
- D. Unfortunately, I had only a few friends those days, and they did not help me.
Explanation: The sentence is structured correctly, using the indefinite article "a" before "few" to indicate a small, indefinite number.
Correct answer: Unfortunately, I had only a few friends those days, and they did not help me.- A. 2
- B. 3
- C. 4
- D. 5
Explanation: The explanation for this question will be added soon.
Correct answer: 4- A. Ethane
- B. Ethanoic Acid
- C. Ethanol
- D. Ethyl Ethanoate
Explanation: The explanation for this question will be added soon.
Correct answer: Ethyl Ethanoate- A. Aldehydes and ketone
- B. Alcohols and ketone
- C. Carboxylic acid and alcohols
- D. Carboxylic acid and aldehydes
Explanation: Esterification is the process of combining an organic acid (RCOOH) with an alcohol (ROH) to form an ester (RCOOR) and water; or a chemical…
Correct answer: Carboxylic acid and alcohols- A. Anhydride > Acylchloride > ester
- B. Ester > Anhydride > Acylchloride
- C. Amide > Acylchloride > ester
- D. Acylchloride > Anhydride > ester
Explanation: Acyl chlorides are the most reactive carboxylic acid derivatives. The electronegative chlorine atom pulls electrons toward it in the C-Cl…
Correct answer: Acylchloride > Anhydride > ester- A. Palmitic acid
- B. Stearic acid
- C. Propionic acid
- D. Valeric acid
Explanation: The explanation for this question will be added soon.
Correct answer: Valeric acid- A. 2-bromo propanal
- B. 3- bromo propenoic acid
- C. 2-bromo butanoic acid
- D. 2-bromo propanoic acid
Explanation: The explanation for this question will be added soon.
Correct answer: 2-bromo propanoic acid- A. Dipole dipole forces
- B. London dispersion forces
- C. Hydrogen bonding
- D. Covalent bonding
Explanation: Hydrogen bonds are formed between the individual molecules of the acid and water molecules.
Correct answer: Hydrogen bonding- A. Are more reactive
- B. Have hydrogen bonding
- C. Have low melting point
- D. Have high density
Explanation: When added to water the carboxylic acids do not form dimers. Rather, hydrogen bonds are formed between the individual molecules of the…
Correct answer: Have hydrogen bonding- A. Aldehyde
- B. Alkyle Halide
- C. Ketones
- D. Alcohol
Explanation: Alcohol reacts with carboxylic acid to form ester
Correct answer: Alcohol- A. Ether
- B. Alcohol
- C. Water
- D. Both Options A and B are correct
Explanation: The question directly lifts from a statement in the Punjab book (11 Biology, Chapter 2: Biological Molecules).
Correct answer: Alcohol- A. Carboxylic Acid
- B. Acid Amide
- C. Cyanohydride
- D. Formaldehyde
Explanation: A is correct as hydrolysis of a cyano group results in the formation of a carboxylic acid (fact)B is incorrect as acid amide is not a…
Correct answer: Carboxylic Acid- A. Carbolic Acid
- B. Acetic Acid
- C. Carbonic Acid
- D. Oxalic Acid
Explanation: Explanation:Acetic acid is used in the manufacture of plastics such as poly vinyl acetate (rayon) and cellulose acetate (silk).Carbolic…
Correct answer: Acetic Acid- A. H3C-COO-C2H5
- B. H3C2-COO-CH3
- C. H3C2-CO-OH
- D. H3C2-COO-C2H5
Explanation: A is incorrect as the compound given is an ester which does not produce carbon dioxide upon reaction with sodium carbonate.B is incorrect…
Correct answer: H3C2-CO-OH- A. CCl3COOH > CHCl2COOH > CH2ClCOOH > CH3COOH
- B. CH3COOH > CHCl2COOH > CCl3COOH > CH2ClCOOH
- C. CHCl2COOH > CH3COOH > CCl3COOH > CH2ClCOOH
- D. CCl3COOH > CH3COOH > CHCl2COOH > CH2ClCOOH
Explanation: CCl3COOH > CHCl2COOH > CH2ClCOOH > CH3COOH: This option suggests that trichloroacetic acid (CCl3COOH) is the strongest acid, followed by…
Correct answer: CCl3COOH > CHCl2COOH > CH2ClCOOH > CH3COOH- A. Diethyl ether
- B. Methyl propyl ether
- C. Ethyl acetate
- D. Butyl alcohol
Explanation: Ethyl Acetate is an ester that is made when Ethanoic acid reacts with Ethanol.
Correct answer: Ethyl acetate