A)which metal is highly reactive with cold water?(B)by this which gas is formed
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Explanation:
(a)Metals like potassium and sodium react violently with cold water. In case of sodium and potassium, the reaction is so violent and exothermic that the evolved hydrogen immediately catches fire. The reaction of calcium with water is less violent.
(b)Hydrogen gas
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Answer:
A)Hydrogen and B)Metals that react with steam form oxides. Hydrogen is always produced when a metal reacts with cold water or steam.
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