A Solution Containing an Unknown Metal Ion Is Analyzed by Qualitative

question 20

Multiple Choice

A solution containing an unknown metal ion is analyzed by qualitative analysis.Addition of chloride has no effect on the solution.Addition of H₂S at pH 0.5 results in a precipitate.What group of cations is present?

• A) Group I
• B) Group II
• C) Group III
• D) Group IV
• E) Group V

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Definitions:

Behavioural Rehearsal

A method used in psychotherapy where individuals practice or role-play real-life situations to improve their response or behavior.

Exposure Therapy

A psychological treatment designed to help individuals confront their fears by gradually exposing them to the feared object or context without any danger, in order to overcome their anxiety.

Obsessive-Compulsive Disorder

A mental disorder characterized by unwanted recurring thoughts (obsessions) and/or repetitive behaviors (compulsions).

Anorexia Nervosa

A psychological and potentially life-threatening eating disorder characterized by self-imposed starvation and excessive weight loss.