Which one of the following statements is incorrect ? (A) van Arkel method is used to purify tungsten. (B) The malleable iron is prepared from cast iron by oxidising impurities in a reverberatory furna

Question

Which one of the following statements is incorrect ?

(A) van Arkel method is used to purify tungsten.
(B) The malleable iron is prepared from cast iron by oxidising impurities in a reverberatory furnace.
(C) Cast iron is obtained by melting pig iron with scrap iron and coke using hot air blast.
(D) Boron and Indium can be purified by zone refining method.

Prashant Kotian · Accepted Answer

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