Question

Match List-I with List-II.

List-I Chemical reaction	List-II Name of process
(1) $4N{H}_3+5O_2\stackrel{{800}^{\circ }C/Pt}{\to }4NO+6H_{2}O$	(a) Contact process
(2) $4HCl+O_2\underset{450-{500}^{\circ }/V_2{O}_5}{\overset{{3230}^{\circ }C/CuC{l}_2}{\to }}2C{l}_2+2H_{2}O$	(b) Ostwald's process
(3) $2S{O}_2+O_2\to 2SO3$	(c) Deacon's process
(4) $2N_2+3H_2\stackrel{Fe+Mb}{\to }2N{H}_3$	(d) Haber's process

• A. $1-a,2-b,3-d,4-c$
• B. $1-b,2-c,3-a,4-d$
• C. $1-a,2-d,3-c,4-b$
• D. $1-a,2-c,3-b,4-d$

Answer 1

The correct option is B $1-b,2-c,3-a,4-d$

(1) $4N{H}_3+5O_2\stackrel{{800}^{\circ }C/Pt}{\to }4NO+6H_{2}O$

It is step of the Ostwald process where ammonia is oxidized to form nitric oxide and also nitrogen dioxide which is used for making nitric acid $\left(HN{O}_3\right)$.

(2) $4HCl+O_2\underset{450-{500}^{\circ }/V_2{O}_5}{\overset{{3230}^{\circ }C/CuC{l}_2}{\to }}2C{l}_2+2H_{2}O$

It is called the Deacon's process in which the oxidation of hydrochloric acid gas by atmospheric oxygen is done in the presence of cupric chloride as a catalyst.

(3) $2S{O}_2+O_2\to 2S{O}_3$

It is the step of Contact process used for producing sulfuric acid.

(4) $2N_2+3H_2\stackrel{Fe+Mb}{\to }2N{H}_3$

It is the Haber's Process in which nitrogen from the air combines with hydrogen derived mainly from natural gas (methane) into ammonia.