Correct Answer: Option A

Explanation

Most alkali metals and alkaline earth metals react with water to produce hydrogen. The alkali metals comprise Group 1 of the periodic table, and include lithium, sodium, potassium, etc.

- Zinc is not much reactive with cold or room temperature water but reacts with steam to form zinc oxide and liberate hydrogen gas.

- Copper lies below hydrogen in the activity series of metals, therefore it can not displace hydrogen from water

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