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Food cans are coated with tin and not with zinc because
(a) zinc is costlier than tin.
(b) zinc has a higher melting point than tin.
(c) zinc is more reactive than tin.
(d) zinc is less reactive than tin.
Answer
Food cans are coated with metals to prevent corrosion by reaction of food with the can.
- Therefore, the metal coating must be less reactive in nature.
- We know that Zinc lies above Tin in the reactivity series .
- Hence, it's more reactive than Tin .
Zinc might react with the food stored in it and make it unfit for eating.
Hence, metal food cans are coated with Tin to prevent food spoilage.
So, the correct answer is (c)
