Question:

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

Solution:

Correct option is C. zinc is more reactive than tin. Food cans are coated with tin and not with zinc because zinc is above tin in the reactivity series, meaning it is more reactive than tin and can react with the food elements preserved in it.