Question

Assertion : Brown ring test is not valid for Fe⁺³ ion. 

Reason : Because NO₃^- ion first gets converted into NO₂^- ion.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is (c) A is true but R is false.

Explanation:

In brown ring test, Fe²⁺ ion oxidises to Fe³⁺ ion, and NO₃^- ion reduces to NO. Brown ring test is valid for Fe²⁺ ion.