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 22 of 28
- A. Acetamide
- B. Acetyl chloride
- C. Carbonic acid
- D. Acetic acid
Explanation: Acetamide can indeed be prepared directly from acetic acid through the reaction with ammonia.
Correct answer: Acetamide- A. Alcohol ester acid
- B. Acid ester alcohol
- C. Ester alcohol acid
- D. Alcohol acid ester
Explanation: Alcohol (X) reacts with an acid (Y) to form an ester (Z). This is correct because alcohols react with acids to form esters, with the acid…
Correct answer: Alcohol acid ester- A. CH2 = CH - CH3
- B. CH3 - CHO
- C. CH3COOC2H5
- D. CH3 - CH2 - COOH
Explanation: This is propanoic acid, a carboxylic acid. Carboxylic acids react with sodium carbonate to produce carbon dioxide gas.
Correct answer: CH3 - CH2 - COOH- A. Heating ammonium acetate
- B. Heating methyl cyanide
- C. Heating ethyl acetate
- D. The hydrolysis of methyl cyanide
Explanation: Ammonium acetate can be heated to produce acetamide through a dehydration reaction.
Correct answer: Heating ammonium acetate- A. Reactions involving the hydrogen atom
- B. Reactions where the hydroxyl group is replaced by another group
- C. Reactions involving the entire carboxyl group
- D. All of the above
Explanation: Carboxylic acids are versatile in their reactivity due to the presence of the carboxyl group, which consists of a carbonyl and a hydroxyl…
Correct answer: All of the above426. Carboxylic acids are dehydrated on heating strongly to form anhydride in the presence of catalyst ;
- A. V2O5
- B. HI/P
- C. SO2
- D. P2O5
Explanation: P2O5 acts as a dehydrating agent on heating carboxylic acid in presence of P2O5 it dehydrates to form acid anhydride.
Correct answer: P2O5- A. Formation of acid anhydride
- B. Formation of amide
- C. Complete reduction to alkanes
- D. Partial reduction to alcohols
Explanation: This option is correct. In reduction of carboxylic acids into alkane COOH group is reduced into CH3 group.
Correct answer: Complete reduction to alkanes- A. Skilled ... imperfect
- B. Equivalent ... marvelous
- C. Energetic ... blithe
- D. Scholarly...profound
Explanation: The best words to fit in the blanks are "Scholarly" and "profound."So the completed sentence is:"They are a few of the extremely Scholarly…
Correct answer: Scholarly...profound- A. is
- B. be
- C. are
- D. been
Explanation: This option uses the correct form of the verb "be" in the present tense singular form ("is").
Correct answer: is- A. Corroborating
- B. Cumulative
- C. Defective
- D. Conciliatory
Explanation: Conciliatory means intended to make peace or reconcile, which fits the context of trying to ease a conflict.
Correct answer: Conciliatory- A. Definitely true
- B. Probably true
- C. Data inadequate
- D. Probably false
- E. Definitely false
Explanation: Step 1: Key facts from the passageCondition of schools: Pupils in over 50% of schools study in the open.Infrastructure: Less than 1% of…
Correct answer: Definitely true- A. 39
- B. 38
- C. 40
- D. 41
Explanation: The pattern is to add consecutive odd numbers starting from 5. The differences between the terms are +5, +7, +9.
Correct answer: 39- A. A. If statement I is the cause and statement II is its effect;
- B. B. If statement II is the cause and statement I is its effect;
- C. C. If both the statements I and II are independent causes;
- D. D. If both the statements I and II are effects of independent causes;
- E. E. If both the statements I and II are effects of some common cause;
Explanation: Statement I indicates a sharp decline in the production of oil seeds, which would logically result in an increased need for imports to…
Correct answer: A. If statement I is the cause and statement II is its effect;- A. Butane dioic acid
- B. Pentane dioic acid
- C. Propane dioic acid
- D. Hexane dioic acid
Explanation: The IUPAC have fix rules which help us to name compounds universally. By using that fix rules we named the Glutaric acid as Pentane dioic…
Correct answer: Pentane dioic acid- A. citric acid
- B. ethanoic acid
- C. oxalic acid
- D. methanoic acid
Explanation: The common names of carboxylic acids were derived from the source from which they are isolated.
Correct answer: ethanoic acid- A. n-Propyl Magnesium Bromide
- B. Iso-propyl magnesium Bromide
- C. N-Butyl Magnesium Bromide
- D. Neo-Butyl Magnesium Bromide
Explanation: Neopentylmagnesium bromide, often referred to as neo-butyl magnesium bromide, is a Grignard reagent derived from neopentyl bromide.
Correct answer: Neo-Butyl Magnesium Bromide- A. Nitrogen
- B. Carbon dioxide
- C. Formaldehyde
Explanation: Carboxylic acids can be prepared by reacting Grignard reagents (RMgX, where R is an alkyl or aryl group and X is a halogen) with carbon…
Correct answer: Carbon dioxide- A. Propanoic acid
- B. Ethanoic acid
- C. Chloro-ethanoic acid
- D. 2-Methyl Propanoic acid
Explanation: Carboxylic acids are most acidic organic compounds. Resonance stabilization of carboxylate ion allows the negative charge to be…
Correct answer: Chloro-ethanoic acid- A. CO2
- B. H2
- C. CO
- D. CH4
Explanation: Carboxylic acids react with metals, such as sodium or magnesium, to form salts (carboxylates) and hydrogen gas.
Correct answer: H2- A. Ethanoic acid
- B. Propanoic acid
- C. Butanoic acid
- D. Pentanoic acid
Explanation: Ethanoic acid is called glacial acetic acid having melting point of 17 degrees
Correct answer: Ethanoic acid