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Option 1 is correct.
happy691:
how
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your answer is (1) 1 and 3
because in first reaction zinc is more reactive than copper so think we replace copper and in third the iron is more reactive than copper so iron we replace copper
please like my answer and add to brain list
because in first reaction zinc is more reactive than copper so think we replace copper and in third the iron is more reactive than copper so iron we replace copper
please like my answer and add to brain list
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