The gas that gives brown colouration in brown ring test is? by Sunday | Oct 16 | Chemistry JAMB | 0 comments A. NO B. CO2 C. NO2 D. CO Correct Answer: Option A – NO Users Also Read These:A loaded test-tube which floats upright in water is…The pigment in the malphigian layer responsible for…A given amount of gas occupies 10.0dm³ at 4atm and…Assuming that brown colour is dominant over black…A positive brown ring test indicates the presence of?