Amines — Practice Quiz
Maharashtra Board · Class 12 · Chemistry
Try a 4-question quiz on Amines for Maharashtra Board Class 12 Chemistry: tap an answer to check it and see why. 45 questions in the full chapter test.
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Quick Quiz: Amines
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What is the hybridization of nitrogen in methylamine (CH₃NH₂)?
Which of the following is classified as a secondary (2°) amine?
What is the IUPAC name of CH₃CH₂NH₂?
Which reagent is used in Gabriel phthalimide synthesis?
Sample Questions
What is the major product when aniline reacts with bromine water?
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2,4,6-Tribromoaniline
Aniline is highly reactive towards electrophilic substitution. With bromine water, it undergoes tribromination to give 2,4,6-tribromoaniline as a white precipitate.
Which of the following methods can be used to prepare primary amines? (Multiple correct answers)
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Reduction of nitrocompounds, Reduction of nitriles, Gabriel phthalimide synthesis, Hofmann degradation
All these methods can prepare primary amines: nitrocompound reduction gives RNH₂, nitrile reduction gives RCH₂NH₂, Gabriel synthesis gives pure primary amines, and Hofmann degradation converts amides to primary amines with one less carbon.
Which test is specific for primary amines?
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Carbylamine test
Carbylamine test is specific for primary amines. When heated with chloroform and KOH, primary amines give foul-smelling isocyanides (carbylamines). Secondary and tertiary amines do not give this test.
What is the correct order of boiling points for isomeric amines?
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1° > 2° > 3°
Primary amines have the highest boiling point due to maximum hydrogen bonding (2 H atoms on N), secondary amines have intermediate boiling points (1 H atom on N), and tertiary amines have the lowest boiling points (no H on N, only van der Waals forces).
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