Practice MCQ For Govt Pharmacist Exam, in this article we will solve, Practice MCQ on the topic, aliphatic amines under the subject Pharmaceutical organic chemistry of second semester. Read following article for your reference.
Aliphatic Amines » PHARMACAREERS
Which of the following is the correct order of basicity of the following amines?
(a) (CH₃)₃N > (CH₃)₂NH > CH₃NH₂ > NH₃
(b) CH₃NH₂ > (CH₃)₂NH > (CH₃)₃N > NH₃
(c) NH₃ > CH₃NH₂ > (CH₃)₂NH > (CH₃)₃N
(d) CH₃NH₂ > NH₃ > (CH₃)₂NH > (CH₃)₃N
The reaction of primary aliphatic amines with nitrous acid at low temperature produces:
(a) Alcohols
(b) Alkanes
(c) Aliphatic diazonium salts
(d) Nitroalkanes
Which of the following reagents can be used to distinguish between primary, secondary and tertiary amines?
(a) Hinsberg’s reagent
(b) Lucas reagent
(c) Fehling’s solution
(d) Tollen’s reagent
The correct order of boiling points of primary, secondary, and tertiary amines is:
(a) Primary > Secondary > Tertiary
(b) Secondary > Primary > Tertiary
(c) Tertiary > Secondary > Primary
(d) Primary = Secondary = Tertiary
Which of the following amines is most soluble in water?
(a) Trimethylamine
(b) Ethylamine
(c) Butylamine
(d) Pentylamine
The product formed when ethylamine reacts with acetyl chloride is:
(a) N-ethylacetamide
(b) Acetic acid
(c) Ethyl alcohol
(d) Ethyl chloride
Which of the following tests is used to detect the presence of primary amines?
(a) Carbylamine test
(b) Lucas test
(c) Fehling’s test
(d) Tollen’s test
Which of the following factors generally increases the basicity of an aliphatic amine?
(a) Electron-withdrawing groups
(b) Electron-donating groups
(c) Increase in chain length
(d) Decrease in chain length
The correct order of basicity among the following amines is:
(a) CH₃NH₂ > (CH₃)₂NH > (CH₃)₃N
(b) (CH₃)₃N > (CH₃)₂NH > CH₃NH₂
(c) (CH₃)₂NH > (CH₃)₃N > CH₃NH₂
(d) CH₃NH₂ > (CH₃)₃N > (CH₃)₂NH
How does the presence of an electron-withdrawing group on an alkyl chain affect the basicity of the corresponding amine?
(a) Increases basicity
(b) Decreases basicity
(c) No effect on basicity
(d) Increases basicity initially, then decreases
Which of the following compounds is the most basic?
(a) Methylamine
(b) Trimethylamine
(c) Aniline
(d) Benzylamine
The basicity of amines is due to the presence of:
(a) A lone pair of electrons on nitrogen
(b) A positive charge on nitrogen
(c) A negative charge on nitrogen
(d) A hydrogen atom attached to nitrogen
Which of the following is the correct order of basicity of the given compounds?
(a) CH₃CH₂NH₂ > CH₃OCH₂NH₂ > CH₃CNH₂
(b) CH₃CNH₂ > CH₃OCH₂NH₂ > CH₃CH₂NH₂
(c) CH₃OCH₂NH₂ > CH₃CH₂NH₂ > CH₃CNH₂
(d) CH₃CH₂NH₂ > CH₃CNH₂ > CH₃OCH₂NH₂
Steric hindrance around the nitrogen atom in an amine:
(a) Increases basicity
(b) Decreases basicity
(c) Has no effect on basicity
(d) Initially increases, then decreases basicity
Which test is used to differentiate between primary, secondary, and tertiary amines?
(a) Carbylamine test
(b) Hinsberg’s test
(c) Nitrous acid test
(d) Lucas test
A primary aliphatic amine reacts with chloroform and alcoholic KOH to form:
(a) Isocyanide
(b) Nitroalkane
(c) Alcohol
(d) Alkyl halide
Hinsberg’s reagent is:
(a) Benzenesulfonyl chloride
(b) Benzene sulfonic acid
(c) Benzyl chloride
(d) Benzoyl chloride
Secondary amines react with nitrous acid to form:
(a) Yellow oily nitrosoamines
(b) Alcohols
(c) Aliphatic diazonium salts
(d) Nitroalkanes
Carbylamine test is positive for:
(a) Primary amines
(b) Secondary amines
(c) Tertiary amines
(d) All types of amines
Ethanolamine is a:
(a) Primary amine
(b) Secondary amine
(c) Tertiary amine
(d) Quaternary ammonium salt
Ethylenediamine contains:
(a) One amine group
(b) Two amine groups
(c) One hydroxyl group
(d) One carbonyl group
Amphetamine is classified as a:
(a) Stimulant
(b) Depressant
(c) Hallucinogen
(d) Analgesic
Ethanolamine is widely used in the production of:
(a) Fertilizers
(b) Detergents
(c) Explosives
(d) Plastics
Ethylenediamine is a key ingredient in the production of:
(a) Nylon
(b) Teflon
(c) Polystyrene
(d) PVC
Amphetamine abuse can lead to:
(a) Increased appetite
(b) Weight gain
(c) Insomnia
(d) Improved memory
The functional groups present in ethanolamine are:
(a) Amine and alcohol
(b) Amine and carboxylic acid
(c) Alcohol and aldehyde
(d) Amine and ketone
Ethylenediamine is a:
(a) Linear molecule
(b) Cyclic molecule
(c) Branched molecule
(d) Aromatic molecule
Amphetamine has a similar structure to:
(a) Dopamine
(b) Serotonin
(c) Norepinephrine
(d) Acetylcholine
Ethanolamine is used as a pH regulator in:
(a) Food industry
(b) Pharmaceutical industry
(c) Textile industry
(d) Paper industry
Ethylenediamine is used as a chelating agent to remove:
(a) Calcium ions
(b) Sodium ions
(c) Potassium ions
(d) Magnesium ions
Amphetamine is primarily prescribed for the treatment of:
(a) Depression
(b) Anxiety
(c) ADHD
(d) Bipolar disorder
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