Match the following

$\begin{array}{cc}\text{(a) Pure nitrogen}& \text{(i) Chlorine}\\ \text{(b) Haber process}& \text{(ii) Sulphuric acid}\\ \text{(c) Contact process}& \text{(iii) Ammonia}\\ \text{(d) Deacon's process}& \text{(iv) Sodium azide or}\\ & \text{Barium azide}\end{array}$

Which of the following is the correct option ?

$\text{(a) (b) (c) (d)}$

The correct option is B $\left(a\right)-\left(iv\right);\left(b\right)-\left(iii\right);\left(c\right)-\left(ii\right);\left(d\right)-\left(i\right)$
$\begin{array}{cc}\text{(a) Pure nitrogen}& \text{(iv) Sodium azide or}\\ & \text{Barium azide}\\ \text{(b) Harber process}& \text{Ammonia}\\ \text{(c) Contact process}& \text{Sulphuric acid}\\ \text{(d) Deacon's process}& \text{Chlorine}\end{array}$

Pure nitrogen is obtained by heating Sodium azide or Barium azide
The Haber Process is used in the manufacturing of ammonia from nitrogen and hydrogen.
The contact process is the current method of producing sulphuric acid in the high concentrations needed for industrial processes.
Deacon process is used for the manufacture of chlorine. In this process, $HCland{O}_2$ react to form $C{l}_2$ and $H_{2}O$

Option (d) is correct