1.

Assertion (A): Preparation of flourine came across number of difficulties Reason: R: It attacks all materials which are used in the preparation (glass, carbon, H_(2)O, metals)

Answer»

A & R are TRUE R is CORRECT explanation of A
A & R are true, R is not correct explanation of A
A is true, but R is FALSE
A is false, but R is true

Solution :Conceptual


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