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It was found that no reaction takes place in test tubes I, II and IV but in III green colour of ferrous sulphate fades. Which on of the following statement is incorrect ?

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Iron is less reactive than Zn

Copper is less reactive than Al

Aluminium is less reactive than Zn

Zinc is more reactive than Fe

answer is C.

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Detailed Solution

Based on the electrochemical series, aluminum is more reactive than zinc. But option ‘C’ states that Al is less reactive than Zn. Hence, option ‘C’ is incorrect.

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