1.

Assertion : Nickel can be purified by Mond's process. Reason: Ni(CO)_4 is a volatile compound which decomposes at 460 K to give pure Ni.

Answer»

Both ASSERTION and REASON are TRUE and reason is the correct explanation of assertion. 
Both assertion and reason are true but reason is not the correct explanation of assertion. 
Assertion is true but reason is FALSE
Assertion is false but reason is true. 

Answer :A


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