Question

How many of the following process of refining is/are chemical methods. ___
(i) Liquation (ii) Fractional distillation process
(iii) Zone refining method (iv) Chromatographic method
(v) Cupellation (vi) Poling
(vii) Hoopes process (viii) Kroll’s process
(ix) Mond’s process

Answer 1

v, vi, vii, viii, ix are chemical methods.