Organic Chemistry Multiple Choice Questions and Answers

(1) Hydrogenation of C₆H₅CHOH−COOH over Rh−Al₂O₃ catalyst in methanol gives which of the following?

[A] C₆H₅CH₂COOH

[B] C₆H₁₁CHOHCOOH

[C] C₆H₅CHOHCH₂OH

[D] C₆H₁₁CH₂COOH

Answer: C₆H₁₁CHOHCOOH

(2) In the anion HCOO− the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?

[A] Electronic orbitals of carbon atom are hybridised

[B] The C = O bond is weaker than the C – O bond

[C] The anion HCOO− has two resonating structures

[D] The anion is obtained by removal of a proton form the acid molecule

Answer: The C = O bond is weaker than the C – O bond

(3) In a set of the given reactions, acetic acid yielded a product C

What would be product C?

[A] CH₃−C-C₂H₅(OH)C₆H₅

[B] CH₃CH(OH)C₂H₅

[C] CH₃COC₆H₅

[D] CH₃CH(OH)C₆H₅

Answer: CH₃−C-C₂H₅(OH)C₆H₅

(4) Carboxylic acids are more acidic than phenol and alcohol because of which of the following?

[A] Intermolecular hydrogen bonding

[B] Formation of dimers

[C] Highly acidic hydrogen

[D] Resonance stabilization of their conjugate base

Answer: Resonance stabilization of their conjugate base

(5) When propionic acid is treated with aqueous sodium bicarbonate CO2 is liberated. The ‘C’ of CO2 comes from which of the following?

[A] Methyl group

[B] Carboxylic acid group

[C] Methylene group

[D] Bicarbonate

Answer: Bicarbonate

(6) The compound not soluble in acetic acid is which of the following?

[A] CaCO₃

[B] CaO

[C] CaC₂O₄

[D] Ca(OH)₂

Answer: CaC₂O₄

(7) Identify the wrong statement from the following?

[A] Salicylic acid’s a monobasic acid

[B] Methyl salicylate is an ester

[C] Salicylic acid gives violet colour with neutral ferric chloride as well as brisk effervescence with sodium bicarbonate

[D] Methyl salicylate does not occur in natural oils

Answer: Methyl salicylate does not occur in natural oils

(8) When CH₃COOH reacts with CH₃−Mg−X, which of the following is formed?

[A] CH₃COX is formed

[B] Hydrocarbon is formed

[C] Acetone is formed

[D] Alcohol is formed

Answer: Hydrocarbon is formed

(9) Hydrolysis of an ester gives a carboxylic acid which on Kolbe’s electrolysis yields ethane. The ester is which of the following?

[A] Ethyl methonoate

[B] Methyl ethanoate

[C] Propylamine

[D] Ethylamine

Answer: Methyl ethanoate

(10) Sulphonation of benzoic acid produces mainly which of the following?

[A] o-sulphobenzoic acid

[B] m-sulphobenzoic acid

[C] p-sulphobenzoic acid

[D] o- and p-sulphobenzoic acid

Answer: m-sulphobenzoic acid

GkSeries.com

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

By Gkseries see more questions

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

Please share this page

Teacher Eligibility Test