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Red hot carbon will remove oxygen from t...

Red hot carbon will remove oxygen from the oxide `XO " and " YO` but not from `ZO`. Y will remove oxygen from `XO`. Use this evidence to deduce the order of acitivity of the three metals X, Y and Z putting the most active frist:

A

XYZ

B

ZYX

C

YXZ

D

ZXY

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The correct Answer is:
B
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