Food cans are coated with tin and not with zinc because
zinc is costlier than tin.
zinc has a higher melting point than tin.
zinc is more reactive than tin.
zinc is less reactive than tin.
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute $H_2SO_4$.
Why do ionic compounds have high melting points ?
Define the following terms.
$(i)$ Mineral $(ii)$ Ore $(iii)$ Gangue
What would you observe when zinc is added to a solution of iron $(II) $ sulphate ? Write the chemical reaction that takes place.