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.


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. 

Reactivity Series - Teachoo.png

  • 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.

Prevention of corrosion in Food cans - Teachoo.png

So, the correct answer is (c) 

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo