1) Which is the odd-one-out? a) relights glowing splint b) squeaky pop c) irritates skin d) turns limewater cloudy e) bleaches damp litmus paper 2) Which is the odd-one-out? a) water vapour b) nitrogen c) oxygen d) ammonia e) carbon dioxide 3) Which is the odd-one-out? a) Argon b) Helium c) Oxygen d) Carbon dioxide e) Nitrogen 4) Which is the odd-one-out? a) Limestone b) Egg shell c) Chalk d) Sea shells e) Igneous 5) Which is the odd-one-out? a) Precipitation b) Oxidation c) Reactivity d) Neutralisation e) Thermal decomposition

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