Question

Match List I (substances) with List II (processes) employed in the manufacture of the substances and select the correct option:

List I (substances)	List II (processes)
(a) Sulphuric acid	(i) Haber's process
(b) Steel	(ii) Bessemer's process
(c) Sodium hydroxide	(iii) Leblanc process
(d) Ammonia	(iv) Contact process

A.) a- (i), b – (iv), c-(ii), d(iii)
B.) a- (i), b – (ii), c-(iii), d(iv)
C.) a- (iv), b – (iii), c-(ii), d(i)
D.) a- (iv), b – (ii), c-(iii), d(i)

Answer 1

To solve this question we should have the prior knowledge about each of the processes mentioned in the question. The process mentioned in list II is the process which helps to synthesize the substances mentioned in list I.

Complete step by step answer:
Let’s understand each of the mentioned process in detail:
Haber’s process- this process is also known as Haber-Bosch process. This process helps in the artificial fixing of nitrogen for the production of ammonia. In this process the atmospheric nitrogen gets converted to ammonia when it reacts with hydrogen using a metal catalyst under high temperature and pressure.
Reaction involved is:
${{N}_{2}}+3{{H}_{2}}\to 2N{{H}_{3}}$

Bessemer’s process- this was the first industrial process which was inexpensive and it is used in mass production of steel from the molten pig iron. This process was used before the development of the open heat furnace. The Principle of this process is to remove impurities from iron by oxidation when air is blown through the molten iron.
Leblanc process- this process was an industrial development process which is used for the manufacturing of soda ash also known as sodium bicarbonate.
Contact process- this is a modern industrial method which is used for the production of Sulphuric acid. After the development of the contact process the use of lead chamber process or chamber process has been affected. Sulphur dioxide and oxygen passed over a hot catalyst form sulphur trioxide which combines with water to form Sulphuric acid.
So, the correct answer is “Option D”.

Note: The Leblanc process occurs in two stages. At the first stage sodium sulfate from sodium chloride and at the second stage sodium sulfate react with coal and calcium carbonate which leads to the production of sodium carbonate. The process becomes superseded after the development of the Solvay process.