Question

Question 1

An iron nail is kept in each of the following liquids. In which case would it lose its shine and appear dull ?

(a) Mustard oil

(b) Soft drink

(c) Coconut oil

(d) Kerosene

Answer 1

An iron nail kept in a soft drink would lose its shine and appear dull because soft drink contains carbonic acid which reacts with the iron nail. So, it gives the dull appearance.

Iron nail has no reaction with mustard oil, coconut oil and kerosene, so it does not lose its shine when kept in these solutions. Option (b) is the correct answer.