Sarthaks Test
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Write the balanced equations for the reaction of sodium, potassium and calcium on cold water.

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1. 2Na + 2H2O → 2NaOH + H2 ↑ 

2. 2K + 2H2O → 2 KOH + H2 ↑ 

3. Ca + 2H2O → Ca(OH)2 + H2

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