Sulphuric acid when poured over zinc releases ___________ gas.
oxygen
carbon dioxide
hydrogen
sulphur dioxide
(a) Give one example of a chemical reaction.
(b) State two characteristics of the chemical reaction which takes place when dilute sulphuric acid is poured over zinc granules.
(c) Give two characteristics of the chemical reaction which occurs on adding potassium iodide solution to lead nitrate solution.
(a) Name the acid formed when sulphur dioxide dissolves in water.
(b) Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.
Which gas is released when zinc reacts with sulphuric acid?