Question

Q.4 You are given 3 fresh iron nails and you dip it each in three test tubes A, B and

C. Iron nail is partly dipped in water in test tube A. Iron nail is fully immersed in

boiled water and the cooking oil is poured over it in test tube B and Iron nail is

kept with teaspoon of calcium chloride in test tube C. All the test tubes are then sealed

After few days what change will you observe in the iron nail kept in the following

setups and why?

A) test tube A

B) test tube B

C) test tube C​

Answer 1

Answer:

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