Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.


Nickel when heated with carbon monoxide forms a highly volatile complex, Ni(CO)4 which when heated further decomposes to form pure Ni


Ni + 4CO Ni(CO)4


Ni(CO)4 Ni(pure) + 4CO (at 460K)


This technique is called vapour phase refining and this reaction is called Mond’s process.

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