Match the following:
(a) Pure Nitrogen (i) Chlorine
(b) Haber process (ii) Sulphuric Acid
(c) Contact process (iii) Ammonia
(d) Deacon's process (iv) Sodium azide or Barium Azide
Which of the following is the correct option?
(a) (b) (c) (d)
(i) (ii) (iii) (iv)
(ii) (iv) (i) (iii)
(iii) (iv) (ii) (i)
(iv) (iii) (ii) (i)
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Option 4
a) Pure Nitrogen
Sodium azide 
or Barium azide 
b) Haber process
Making ammonia
c) Contact process
producing sulphuric acid 
d) Deacon's process
Pruduces 
gas
Option 1)
(i) (ii) (iii) (iv)
Option 2)(ii) (iv) (i) (iii)
Option 3)(iii) (iv) (ii) (i)
Option 4)(iv) (iii) (ii) (i)