NEET Chemistry Functional Group Tests Assertion Reason Question
Assertion (A): The presence of cobalt ion in a solution can be confirmed by the formation of a yellow precipitate of potassium hexanitritocobaltate (III).
Reason (R): Cobalt sulphide dissolves in aqua regia, and the resulting solution can be treated with potassium nitrite and acetic acid to form the complex.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
Both statements are true; the reason explains that the cobalt ion test involves dissolving cobalt sulphide in aqua regia and then forming a yellow precipitate with potassium nitrite and acetic acid.
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