NEET Chemistry Functional Group Tests MCQ Question
Which of the following statements correctly describes the functional group tests for the presence of certain ions?
A yellow precipitate indicates the presence of As 3+ ions, while an insoluble black precipitate indicates group II-A cations.
A clear solution after dissolving a salt in water confirms the presence of Cl– ions.
Heating with concentrated HNO3 is always required to confirm the presence of white precipitates.
The absence of a white precipitate when adding dilute HCl confirms the presence of Group-I ions.
Correct Answer
Detailed Explanation
According to the NCERT context, a yellow precipitate indicates As 3+ ions, and an insoluble black precipitate confirms the presence of group II-A cations (Pb²⁺, Cu²⁺). Options B, C, and D are incorrect interpretations of the functional group tests.
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