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Ans.Q.2 An iron nail is kept in each of the following liquids. In which case would it lose its shine and appearINCERT Exemplar]dull ?(e) Mustard ofl(b) Soft drink(c) Coconut oil(d) KeroseneAns.9eae..R

Answer» <p> In soft drinks iron nail will look dull and lose its shining.An iron nail kept in soft drink would lose its shine and appear dull became soft drink contains carbonic acid which reacts with iron nail, so it gives dull appearance. Iron nail has no reaction with mustard oil, coconut oil and kerosene, so does not lose its shine, when kept in these solutions.</p>


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