Which of the following drugs given are positive in HALOGEN TEST? Explain how these drugs could be positive in that test? PLEASE PUT references you used in finding out their results.

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5. Test for Halogen a. Beilsten Test: Clean a copper wire and then dip into the sample solutions. Perform a flame test and observe the color imparted to the flame to identify the specific halogen present. Negative Positive Test for Halogen Paracetamol Sulfamerazine Aspirin Caffeine Chlorobutanol Barbital Na