AIIMS Chemistry Amines Class 12 Questions

Assertion: Tert. Butyl amine can be formed by Gabriel phthalimide synthesis Reason: It follow N S 1 mechanism

Assertion : Aliphatic tertiary amine can be distinguished from aromatic tertiary amines. Reason : Aliphatic tertiary amines react with nitrous acid to form insoluble nitrites.

Point out the correct decreasing order of pKb values of following amines C₂H₅NH₂, C₆H₅NHCH₃, (C₂H₅)₂NH and C₆H₅NH₂.

Each of these questions contains two statements. Assertion (A) and Reason (R). Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below. Assertion (A) Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines Reason (R) Aryl halides have same reactivity as alkyl halides towards nucleophilic substitution reactions.

Assertion (A): When acetamide reacts with $\text{NaOH}$ and $\text{Br}_2$, methyl amine is formed. Reason (R): The reaction occurs through the intermediate formation of an isocyanate.

Which amine amongst the following will answer positively the carbylamines test?

Point out the correct decreasing order of pKb values of following amines C₂H₅NH₂, C₆H₅NHCH₃, (C₂H₅)₂NH and C₆H₅NH₂

Assertion (A) Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines. Reason (R) Aryl halides have same reactivity as alkyl halides towards nucleophilic substitution reactions.

Assertion p-toluidine is a stronger base than m-toluene. Reason Methyl group from m-position exerts smaller electron donating inductive (+I) effect than from p-position.

Reaction of aniline with HNO₂ followed by treatment of dilute acid gives

Which of the following will give carbylamine test?

If phthalic acid is treated with NH₃ and then it is first heated weakly then strongly, the final product formed is

PhCH₂Cl \(\xrightarrow{aq.NaCN}\) \(\xrightarrow{Catalytic\ hydrogenation}\) (U). The final product (U) is

Which of the following reactions does not yield an amine?

The chemical name for melamine is

The compound which on reaction with aqueous nitrous acid at low temperature produces an oily nitrosamine is

The reaction R - C - R → RCONHR + N₂ is called

Which of the following amines will not give N₂ gas on treatment with nitrous acid (NaNO₂ + HCl)?

Which of the following statement is true?

Among the following which one does not act as an intermediate in Hofmann rearrangement?

Aromatic nitriles (ArCN) are not prepared by reaction:

Which of the following is involved in Sandmayer's reaction?

In the reaction : C₆H₅CHO + C₆H₅NH₂ → C₆H₅N = HC₆H₅ + H₂O, the compound C₆H₅N = HC₆H₅ is known as

Assertion : Boiling and melting points of amides are higher than corresponding acids. Reason : It is due to strong intermolecular hydrogen bonding in their molecules.

Acetamide and ethylamine can be distinguished by reacting with