General
✓✗Which of the following is the weakest base?
- 4-Methylaniline
- 4-Nitroaniline
- 4-Methoxyaniline
- Aniline
General
✓✗Which of the following is more basic than aniline?
- Diphenylamine
- Triphenylamine
- p-Nitroaniline
- Benzylamine
General
✓✗Statement I: Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at 273−278 K. It decomposes easily in the dry state.
Statement II: Insertion of iodine into the benzene ring is difficult, and hence iodobenzene is prepared through the reaction of benzenediazonium salt with KI.
Statement II: Insertion of iodine into the benzene ring is difficult, and hence iodobenzene is prepared through the reaction of benzenediazonium salt with KI.
- Statement I is correct but Statement II is incorrect
- Statement I is incorrect but Statement II is correct
- Both Statement I and Statement II are correct
- Both Statement I and Statement II are incorrect
General
✓✗How many moles of CH3I are needed to convert one mole of methylamine completely into the quaternary ammonium iodide?
- 3
- 2
- 4
- 1
General
✓✗Aniline is a
- blue liquid
- gas
- colourless liquid that darkens on storage due to atmospheric oxidation
- yellow solid
General
✓✗Which of the following has the lowest pKb?
- (C2H5)2NH
- C6H5NH2
- NH3
- C2H5NH2
General
✓✗Compound X (C6H7N) dissolves in dilute HCl, gives the carbylamine test, and with bromine water gives a white precipitate of C6H4Br3N. X is
- 2-methylpyridine
- aniline
- cyclohexylamine
- benzylamine
General
✓✗Which of the following methods give primary amines?
A. Gabriel phthalimide synthesis
B. Hofmann bromamide degradation
C. Reduction of nitriles
D. Reduction of isocyanides
Choose the correct answer from the options given below.
A. Gabriel phthalimide synthesis
B. Hofmann bromamide degradation
C. Reduction of nitriles
D. Reduction of isocyanides
Choose the correct answer from the options given below.
- A, B and C only
- A, B, C and D
- B and D only
- A and D only
General
✓✗Which of the following statements about primary amines is false?
- Alkyl amines are stronger bases than aryl amines
- Alkyl amines are stronger bases than ammonia
- Alkyl amines react with nitrous acid to produce alcohols
- Aryl amines react with nitrous acid (at 273−278 K) to produce phenols
General
✓✗The IUPAC name of H2N−CH2CH2−NH2 is
- ethanamine-2-amine
- ethane-1,2-diamine
- 1,2-diaminoethene
- ethylenediamide
General
✓✗Assertion: In aqueous solution, (CH3)3N is a stronger base than (CH3)2NH.
Reason: Trimethylamine has three electron-donating methyl groups.
Reason: Trimethylamine has three electron-donating methyl groups.
- Both Assertion and Reason are true and Reason is the correct explanation of Assertion
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- Assertion is true but Reason is false
- Assertion is false but Reason is true
General
✓✗Primary aliphatic amines react with nitrous acid to give
- alcohols with evolution of nitrogen gas
- nitrosamines
- stable diazonium salts
- no reaction
General
✓✗Which one of the following orders is wrong with respect to the property indicated?
- Fluoroacetic acid > chloroacetic acid > bromoacetic acid (acid strength)
- Benzoic acid > phenol > cyclohexanol (acid strength)
- Formic acid > acetic acid > propanoic acid (acid strength)
- Aniline > cyclohexylamine > benzamide (basic strength)
General
✓✗Hofmann bromamide degradation converts an amide into
- a secondary amine
- a primary amine with one carbon atom less
- a primary amine with one carbon atom more
- a nitrile
General
✓✗The Sandmeyer reaction converts a diazonium salt into an aryl chloride using
- KI
- Cu powder/HCl
- CuCl/HCl
- H3PO2