Name the major salt present in sea-water.
In the given image, ___ plays a major role in collecting salt from sea/ocean water.
Name the technique employed for obtaining salt from sea water.
Name the technique to separate
(i) butter from curd
(ii) salt from sea-water
(iii) camphor from salt
(a) Name the process by which common salt is obtained from sea-water.
(b) Name the process by which common salt is purified.