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JEE Main Chemistry question

ChemistryPrinciples Related to Practical ChemistryJEE Main

The function of boiling the sodium extract with conc. HNO₃ before testing for halogen is

Answer: (D)

Solution

NaCN and Na₂S (if present) would also give precipitates with AgNO₃ and interfere with the halide

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Question ID VK-139496