General Principles And Processes Of Isolation Of Metals Question 10
Question 10 - 31 January - Shift 2
Which one of the following statements is incorrect?
(1) Boron and Indium can be purified by zone refining method.
(2) Van- Arkel method is used to purify tungsten.
(3) Cast iron is obtained by melting pig iron with scrap iron and coke using hot air blast.
(4) The malleable iron is prepared from cast iron by oxidising impurities in a reverberatory furnace.
Show Answer
Answer: (2)
Solution:
Formula: Purification or Refining of Metal
Van - Arkel process is used for purification of Ti, $Zr, Hf$ and $B$.
