Three solids, P, Q and R, each react with dilute sulfuric acid to form zinc sulfate. P and R both give off gases during the reaction. The gas formed when P reacts is not flammable. The gas formed when R reacts is flammable. What are P, Q and R?
- AP zinc, Q zinc hydroxide, R zinc carbonate
- BP zinc carbonate, Q zinc, R zinc oxide
- CP zinc carbonate, Q zinc hydroxide, R zinc
- DP zinc oxide, Q zinc carbonate, R zinc