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Tardigrade
Question
Chemistry
Which one of the following statements is incorrect?
Q. Which one of the following statements is incorrect?
417
136
JEE Main
JEE Main 2023
General Principles and Processes of Isolation of Elements
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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.
Solution:
Van - Arkel process is used for purification of
T
i
,
Z
r
,
H
f
and
B
.