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E. Further questions: Tick the correct box(es) in each case. mixture of carbon carbon, C oxygen, O2 C and O2 dioxide, CO2 1 It can relight a glowing splint. 2 It can be burnt in air. 3 It can turn limewater milky. hydrogen, oxygen, mixture of water, H2 O2 H2 and O2 H2O It gives a pop sound when burnt in air. 2 It is a supporter of burning. V 3 It is a liquid at room temperature