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Which one of the following metals is less reactive than hydrogen? |
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(a) |
Barium |
(b) |
Copper |
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(c) |
Lead |
(d) |
Magnesium |
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Which one of the following metals is less reactive than hydrogen? |
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|
(a) |
Barium |
(b) |
Copper |
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|
(c) |
Lead |
(d) |
Magnesium |
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