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Organic Chemistry Questions and Answers – Physical Properties of Carboxylic Acids | Organic Chemistry Multiple Choice Questions and Answers

Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Which of the following acids has the smallest dissociation constant?
[A] CH3CHFCOOH
[B] FCH2CH2COOH
[C] BrCH2CH2COOH
[D] CH3CHBrCOOH
Answer: BrCH2CH2COOH
(2) The vapour of a carboxylic acid HA when passed over MnO2 at 573 K yields propanone. What is the acid HA?
[A] Methanoic acid
[B] Ethanoic acid
[C] Propanoic acid
[D] Butanoic acid
Answer: Ethanoic acid
(3) Which acid is strongest or Which is most acidic?
[A] Cl2CH.COOH
[B] ClCH2COOH
[C] CH3COOH
[D] Cl3C.COOH
Answer: ClCH2COOH
(4) The acid which reduces Fehling solution is which of the following?
[A] Methanoic acid
[B] Ethanoic acid
[C] Butanoic acid
[D] Propanoic acid
Answer: Methanoic acid
(5) Which class of compounds shows H-bonding even more than in alcohols?
[A] Phenols
[B] Carboxylic acids
[C] Ethers
[D] Aldehydes
Answer: Carboxylic acids
(6) Which of the following is the strongest acid?
[A] CH3COOH
[B] BrCH2COOH
[C] ClCH2COOH
[D] FCH2COOH
Answer: FCH2COOH
(7) The reaction of HCOOH with conc.H2SO4 gives which of the following compound?
[A] CO2
[B] CO
[C] Oxalic acid
[D] Acetic acid
Answer: CO
(8) Which one is strongest acid among following options?
[A] CH2FCOOH
[B] CH2ClCOOH
[C] CHCl2COOH
[D] CHF2COOH
Answer: CH2ClCOOH
(9) Acetic acid is weak acid than sulphuric acid because which of the following reasons?
[A] It decomposes on increasing temperature
[B] It has less degree of ionisation
[C] It has -COOH group
[D] It has more inductive effect
Answer: It has less degree of ionisation
(10) In CH3COOH and HCOOH, HCOOH will be which of the following?
[A] Less acidic
[B] Equally acidic
[C] More acidic
[D] cannot say about acidic behaviour
Answer: More acidic
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