Among the metals calcium, magnesium, zinc and copper, the ability of one to displace the other decreases in the following order :

C u > Z n > M g > C a

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C a > Z n > C u > M g

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C a > M g > Z n > C u

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Z n > M g > C u > C a

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Solution

The correct option is B $C a > M g > Z n > C u$
Among the metals calcium, magnesium, zinc and copper, the ability of one to displace the other decreases in the following order.
$C a > M g > Z n > C u$

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