A) A nitride on hydrolysis produce NH3:
When a nitride compound is hydrolyzed, it reacts with water to produce ammonia. Nitrides are compounds that contain the nitride ion (N3-), and when they come into contact with water, they undergo hydrolysis. The reaction can be represented as follows:

Nitride (N3-) + Water (H2O) → Ammonia (NH3)

This reaction occurs because the nitride ion reacts with water to form ammonia and hydroxide ions. The ammonia produced is a colorless gas with a pungent odor.

B) Haber's process of ammonia formation is exothermic:
Haber's process, also known as the Haber-Bosch process, is a method for synthesizing ammonia from nitrogen gas (N2) and hydrogen gas (H2). The reaction is catalyzed by an iron catalyst and occurs at high temperatures and pressures. The overall reaction is as follows:

N2(g) + 3H2(g) ⇌ 2NH3(g)

The reaction is exothermic, meaning it releases heat energy. This is because the formation of ammonia from nitrogen and hydrogen is accompanied by a decrease in the total energy of the system.

C) NH3 dissolves AgCl forming a soluble complex:
Ammonia (NH3) is a versatile compound that can act as a ligand and form complexes with metal ions. When ammonia is added to silver chloride (AgCl), it forms a soluble complex called silver diammine chloride. The reaction can be represented as follows:

AgCl(s) + 2NH3(aq) → [Ag(NH3)2]Cl(aq)

In this reaction, the ammonia molecules coordinate with the silver ion (Ag+) and displace the chloride ions (Cl-) from the silver chloride compound. The resulting complex is soluble in water, forming a clear solution.

D) Ammonia is a Lewis base as well as a Bronsted-Lowry base:
Ammonia (NH3) can act as both a Lewis base and a Bronsted-Lowry base. As a Lewis base, ammonia donates a pair of electrons from its lone pair to form a coordinate bond with a Lewis acid. For example, in the reaction with a metal ion like silver (Ag+), ammonia donates its lone pair of electrons to form a coordinate bond with the metal ion.

As a Bronsted-Lowry base, ammonia can accept a proton (H+) to form the ammonium ion (NH4+). In water, ammonia can act as a base by accepting a proton from a water molecule, forming the ammonium ion and hydroxide ion:

NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq)

Overall, ammonia exhibits both Lewis basicity and Bronsted-Lowry basicity, making it a versatile base in various chemical reactions.