(A) The Mond process is used for the refining of nickel. In this process,impure nickel is heated in a stream of carbon monoxide to form volatile nicke

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(A) The Mond process is used for the refining of nickel. In this process,impure nickel is heated in a stream of carbon monoxide to form volatile nickel tetracarbonyl,$Ni(CO)_4$. This complex is then decomposed at a higher temperature to obtain pure nickel: $Ni(s) + 4CO(g) \xrightarrow{330-350 \ K} Ni(CO)_4(g)$ $Ni(CO)_4(g) \xrightarrow{450-470 \ K} Ni(s) + 4CO(g)$

Class 12 Chemistry General Principles and Processes of Isolation of Elements Refining of crude Metal

Easy

Which method is used to obtain pure nickel from impure nickel?

A
Mond process
B
Van Arkel method
C
Zone refining
D
Electrolytic refining

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Refining of crude Metal

Refining of silver is done by :

Easy

View Solution

Match List-$I$ with List-$II$ and select the correct answer using the codes given below:

List-$I$ List-$II$

$(I)$ Van Arkel method $a.$ Refining of Titanium

$(II)$ Solvay process $b.$ Manufacture of $Na_2CO_3$

$(III)$ Cupellation $c.$ Refining of Copper

$(IV)$ Poling $d.$ Refining of Silver

List-$I$	List-$II$
$(I)$ Van Arkel method	$a.$ Refining of Titanium
$(II)$ Solvay process	$b.$ Manufacture of $Na_2CO_3$
$(III)$ Cupellation	$c.$ Refining of Copper
$(IV)$ Poling	$d.$ Refining of Silver