Identify Z in the following reaction sequence.





Step 1: Trace the reaction steps. The sequence involves the conversion of an amide to a carboxylic acid group, likely involving steps that introduce or modify amine functionalities.
Step 2: Analyze the plausible structure of Z. Given the reaction sequence and typical outcomes, the formation of a carboxamide (CONH2) from the described reagents and conditions is most consistent with the chemistry involved.
To solve the problem, we need to identify the compound \( Z \) in the given reaction sequence. The sequence is as follows:
1. Step 1:
The first step involves the reaction of methyl chloride (CH₃COCl) with aluminum chloride (AlCl₃), which is a Friedel-Crafts alkylation reaction. This step introduces a methyl group to the benzene ring, resulting in methylbenzene (toluene).
2. Step 2:
In the second step, the methyl group on toluene undergoes oxidation with potassium permanganate (KMnO₄) in an alkaline medium, which oxidizes the methyl group to a carboxylic acid group (-COOH). This results in benzoic acid (C₆H₅COOH).
3. Step 3:
In the third step, benzoic acid undergoes reduction with ammonia (NH₃), which leads to the formation of an amine group (-NH₂) replacing the carboxyl group. This results in aniline (C₆H₅NH₂).
4. Conclusion:
The compound \( Z \) formed after these reactions is aniline (C₆H₅NH₂), which is option (3).
Final Answer:
The correct option is (C) aniline (C₆H₅NH₂).

List-I | List-II | ||
| (A) | NH3 | (I) | Trigonal Pyramidal |
| (B) | BrF5 | (II) | Square Planar |
| (C) | XeF4 | (III) | Octahedral |
| (D) | SF6 | (IV) | Square Pyramidal |
1 gram of sodium hydroxide was treated with 25 ml. of 0.75 M HCI solution, the mass of sodium hydroxide left unreacted is equal to :
Which of the following are ambident nucleophiles?
[A.] CN$^{\,-}$
[B.] CH$_{3}$COO$^{\,-}$
[C.] NO$_{2}^{\,-}$
[D.] CH$_{3}$O$^{\,-}$
[E.] NH$_{3}$
Identify the anomers from the following.

The standard Gibbs free energy change \( \Delta G^\circ \) of a cell reaction is \(-301 { kJ/mol}\). What is \( E^\circ \) in volts?
(Given: \( F = 96500 { C/mol}\), \( n = 2 \))