NEET Chemistry Functional Group Tests MCQ Question
In a qualitative analysis, a salt solution was acidified with concentrated HNO3, warmed, and then ammonium molybdate solution was added. No yellow precipitate was observed. What does this indicate about the presence of the phosphate ion (PO4 3−) in the solution?
PO4 3− is absent.
PO4 3− is present in trace amounts.
The test is inconclusive without further heating.
The presence of PO4 3− cannot be determined without diluting the solution.
Correct Answer
Detailed Explanation
The absence of a yellow precipitate indicates that the phosphate ion (PO4 3−) is absent, as per the systematic qualitative analysis described.
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