The reactions given below represent the processes of reduction to obtain metals from their respective ores. Arrange them in the following order.
Sodium, aluminium, zinc, chromium, iron, copper and mercry
(1) Metal oxide + metal sulphide `to` Metal + `SO_(2)`
(2) Metal oxide + CO `to` Metal + `CO_(2)`
(3) Metal oxide + C `to` CO
(4) Metal oxide `to` Metal + `O_(2)`
(5) Meta oxide `overset(Delta)to` Metal + `O_(2)`
(6) `"Metal oxide"+"Aluminium"to"Aluminium oxide"+"Metal"`
(7) Metal chloride `to` Metal + Chlorince

Options

A. 7 4 3 6 2 1 5
B. 7 4 3 6 2 5 1
C. 1 3 2 4 6 7 5
D. 7 4 5 2 6 1 5

Explanation

(i) Metal chloride `to` Metal + Chlorine
(ii) Metal oxide `to` Metal + `O_(2)`
(iii) Metal oxide + C `to` Metal + CO
(iv) `"Metal oxide"+"alumininm"to"aluminium oxide" +"metal"`
(v) `"Meta oxide"+COto"Metal"+CO_(2)`
(vi) `"Metal oxide"+"Metal suphide"to"Metal"+SO_(2)` (vii) `"Metal oxide"overset(Delta)to"Metal"+O_(2)`