1.

Assertion : Zirconium can be purified by Van Arkel method. Reason : Zrl_4 is volatile and decomposes at 1800 K

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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