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Question
A metal less reactive and another metal more reactive than hydrogen are ______.
Options
aluminium and lead
iron and magnesium
copper and tin
copper and mercury
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Solution
A metal less reactive and another metal more reactive than hydrogen are copper and tin.
Explanation:
According to the reactivity series, copper lies below hydrogen, meaning it is less reactive and cannot displace hydrogen from water or acids. Conversely, tin lies above hydrogen in the reactivity series, making it more reactive and capable of displacing hydrogen. In the other options, the metals are either both more reactive (aluminium, lead, iron, magnesium) or both less reactive (copper, mercury) than hydrogen.
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