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Iron fillings are put in different test-tubes A, B, C and D containing ZnSO4, CuSO4, Al2(SO4)3, CaCl2 solutions

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asked Mar 26, 2018 by Golu (37,045 points) ● 19 ● 145 ● 413

Iron fillings are put in different test-tubes A, B, C and D containing ZnSO4, CuSO4, Al2(SO4)3, CaCl2 solutions respectively. In which of the following test-tubes will change be observed ?

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answered Mar 26, 2018 by BISHNU (15,580 points) ● 4 ● 4 ● 5
selected Mar 27, 2018 by faiz
 
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The change will be observed in test-tube B because iron is more reactive than copper.

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