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Question

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 ​
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B
Soft drink​
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C
Coconut oil ​
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D
Kerosene​
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Solution

The correct option is B Soft drink​
Answer- b) Soft drink​

An iron nail kept in a soft drink will lose its shine and appear dull because it has carbonic acid dissolved in it. Iron reacts with it and loses its shiny appearance. ​

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