Practice MCQ For Govt Pharmacist Exam

Practice MCQ For Govt Pharmacist Exam, in this article we will solve, Practice MCQ on the topic, Carbonyl compounds- structure and uses under the subject Pharmaceutical organic chemistry of first semester. Read following article for your reference.

Carbonyl Compounds- Structure And Uses » PHARMACAREERS

 

Which functional group is present in both aldehydes and ketones?

A) Alcohol

B) Carboxylic acid

C) Carbonyl

D) Ester

 

What is the general formula for an aldehyde?

A) R-CO-R’

B) R-COOH

C) R-CHO

D) R-COR’

 

Which of the following reactions is characteristic of aldehydes but not ketones?

A) Cannizzaro reaction

B) Aldol condensation

C) Friedel-Crafts acylation

D) Grignard reaction

 

Which reagent is commonly used to distinguish between aldehydes and ketones?

A) Tollen’s reagent

B) Fehling’s solution

C) Lucas reagent

D) Schiff’s reagent

 

What is the product of the reaction between an aldehyde and a primary alcohol in the presence of an acid catalyst?

A) Aldehyde

B) Ketone

C) Hemiacetal

D) Acetal

 

Which of the following compounds is an example of a ketone?

A) Formaldehyde

B) Acetone

C) Benzaldehyde

D) Methanol

 

Which of the following reactions involves the addition of a nucleophile to the carbonyl carbon of an aldehyde or ketone?

A) Wolff-Kishner reduction

B) Clemmensen reduction

C) Nucleophilic addition

D) Oxidation

 

Which reagent is used to test for the presence of aldehydes?

A) Tollens’ reagent

B) Fehling’s solution

C) Benedict’s reagent

D) Schiff’s reagent

 

When Tollens’ reagent reacts with an aldehyde, what is the product formed?

A) Silver mirror

B) Red precipitate

C) Blue color

D) Yellow color

 

Which test involves the reduction of Tollen’s reagent by an aldehyde?

A) Fehling’s test

B) Schiff’s test

C) Iodoform test

D) Tollens’ test

 

What color change is observed when Fehling’s solution reacts with an aldehyde?

A) Blue to red

B) Yellow to orange-brown

C) Colorless to yellow

D) Red to green

 

Which test is specific for detecting methyl ketones (such as acetone)?

A) Iodoform test

B) Schiff’s test

C) Fehling’s test

D) Benedict’s test

 

What is the characteristic yellow precipitate formed during the iodoform test?

A) AgI

B) CHI₃

C) Cu₂I₂

D) PbI₂

 

Which reagent is used to distinguish between aldehydes and ketones based on their ability to form hydrates?

A) Schiff’s reagent

B) Tollen’s reagent

C) Sodium bisulfite (NaHSO₃)

D) Fehling’s solution

 

What is the chemical formula of formaldehyde?

A) CH₃OH

B) CH₂O

C) C₂H₆O

D) C₆H₁₂O₆

 

Formaldehyde is commonly used in which of the following industries?

A) Textile industry

B) Food industry

C) Pharmaceutical industry

D) Polymer industry

 

Which of the following statements about formaldehyde is true?

A) It is a ketone.

B) It is a gas at room temperature.

C) It is a strong reducing agent.

D) It is used as a disinfectant.

 

What is the common name for paraldehyde?

A) Trioxymethylene

B) Ethanal

C) Acetone

D) Methanol

 

Paraldehyde is primarily used as:

A) Anesthetic

B) Antiseptic

C) Solvent

D) Flavoring agent

 

How many oxygen atoms are present in the structure of paraldehyde?

A) 1

B) 2

C) 3

D) 4

 

Which of the following compounds is a cyclic trimer of formaldehyde?

A) Formalin

B) Paraformaldehyde

C) Paraldehyde

D) Glutaraldehyde

 

What is the chemical formula of chloral hydrate?

A) C₆H₁₂O₆

B) C₄H₈O₂

C) CCl₃CHO

D) C₆H₇Cl₃O₂

 

Chloral hydrate is commonly used as:

A) A sedative and hypnotic

B) A disinfectant

C) A solvent for plastics

D) A food preservative

 

Which functional group is present in chloral hydrate?

A) Aldehyde

B) Ketone

C) Alcohol

D) Carboxylic acid

 

What is the common name for hexamine?

A) Methenamine

B) Ethanolamine

C) Butanamine

D) Propanamine

 

Hexamine is commonly used for:

A) Treating urinary tract infections

B) Flavoring in food

C) Synthesizing plastics and resins

D) Cleaning glassware

 

What is the molecular formula of hexamine?

A) C₆H₁₂O₆

B) C₄H₈O₂

C) C₆H₁₂N₄

D) C₆H₇Cl₃O₂

 

Hexamine is commonly known by another name. What is it?

A) Formaldehyde

B) Urotropine

C) Acetone

D) Paraldehyde

 

What is the structural formula of benzaldehyde?

A) C₆H₅CHO

B) C₆H₄(OH)₂

C) C₆H₅COOH

D) C₆H₆

 

Benzaldehyde is a key component in the synthesis of which compound?

A) Aspirin

B) Paracetamol (acetaminophen)

C) Benzoin

D) Ibuprofen

 

Which compound is responsible for the characteristic flavor of almonds?

A) Benzaldehyde

B) Vanillin

C) Cinnamaldehyde

D) Eugenol

 

What is the common name for vanillin?

A) 4-hydroxybenzaldehyde

B) 3-methoxy-4-hydroxybenzaldehyde

C) 2-hydroxy-3-methoxybenzaldehyde

D) 4-methoxybenzaldehyde

 

Vanillin is a major component found in which natural source?

A) Vanilla beans

B) Cinnamon bark

C) Clove oil

D) Almond extract

 

What gives cinnamon its characteristic aroma?

A) Benzaldehyde

B) Vanillin

C) Cinnamaldehyde

D) Eugenol

 

Cinnamaldehyde is used in the production of which type of flavoring?

A) Mint flavor

B) Strawberry flavor

C) Caramel flavor

D) Cinnamon flavor

 

Which compound is responsible for the spicy taste of cinnamon?

A) Benzaldehyde

B) Vanillin

C) Cinnamaldehyde

D) Eugenol

 

What is the chemical formula of cinnamaldehyde?

A) C₆H₅CHO

B) C₉H₈O₃

C) C₉H₆O

D) C₉H₈O

 

Cinnamaldehyde is used in the synthesis of which class of compounds?

A) Antipyretics

B) Antiseptics

C) Antioxidants

D) Perfume and flavor compounds

 

Which of these compounds is NOT naturally occurring in cinnamon?

A) Benzaldehyde

B) Vanillin

C) Cinnamaldehyde

D) Eugenol

 

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