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.
Differentiate between metal and non-metal on the basis of their chemical properties.
Why do ionic compounds have high melting points ?
What type of oxides are formed when non-metals combine with oxygen?
Give reasons : Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
Define the following terms.
$(i)$ Mineral $(ii)$ Ore $(iii)$ Gangue