Which of the following statement is not correct ?

Options

A. `Ti` is refined by the van Ackel precess
B. Impure Ni is purified by the zone- refining process
C. Desilverization of lead may be cerried out using the parkes process
D. Matel `Ag` is parified by the capellation process

Answer

b

Explanation

metal process is used for refning of na when impure `Ni` is heated in a current of `CO at 350 - 350 k` is forms volatile nickel lertacbody so obstance as ontant is then heated in a higher temperature `(450 =- 470 K)` when it andropars thermal deotempositive giving pate Ni.