Help me out please i really need to find the answer?

if you place a mossy zinc in the test tube. and add 5 ml of dilute hydrochloric acid. then Immediately, cover the test tube with the cork stopper. and then the bubbles start rising from the acid. and live it for a few minutes to aculate gas. then light a matchstick then swiftly remove the cork stopper from the mouth of the test tube and test the aculated gas with the burning match stick then what here comes the question what could possibly happen then? please i really need some answer