A positive brown ring test indicates the presence of? by Sunday | Aug 22 | Chemistry WAEC | 0 comments A. NO3 B. Fe3+ C. SO2¯³ D. CU+ E. NO2‾ Correct Answer: Option A – NO3 Users Also Read These:A normal supply curve has a positive slope which…In a Biuret test, some protein was mixed with sodium…The persistent Presence of glucose in a person’s…When a solution of ammonium trioxocarbonate (IV) is…The colour that is associated with a positive iodine…