Question
Chemistry Question on Classification of elements & periodicity in properties
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.
Answer
van Arkel method is used to purify tungsten.
Explanation
Solution
Van - Arkel process is used for purification of Ti,Zr,Hf and B.
So, the correct answer is (A) : van Arkel method is used to purify tungsten.