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:The gas that gives brown colouration in brown ring test is?The presence of a large member of mitochondria in a…Assuming that in sheep, the allele for black coat…If the silver mirror test is positive; it indicates…In a Biuret test, some protein was mixed with sodium…