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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