1
JEE Advanced 2019 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
The cyanide process of gold extraction involves leaching out gold from its ore with CN$$-$$ in the presence of Q in water to form R. Subsequently, R is treated with T to obtain Au and Z. Choose the correct option(s).
2
JEE Advanced 2016 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
Extraction of copper from copper pyrite (CuFeS2) involves
3
JEE Advanced 2015 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process
is(are)
4
JEE Advanced 2013 Paper 2 Offline
MCQ (More than One Correct Answer)
+3
-0.75
The carbon–based reduction method is NOT used for the extraction of
Questions Asked from Isolation of Elements (MCQ (Multiple Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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