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प्रश्न
What is observed when hot, concentrated caustic soda solution is added to zinc? Write a balanced equation.
उत्तर
\[\ce{Zn + \underset{concentrated}{\underset{Hot and}{2NaOH}}-> \underset{(colourless)}{\underset{Sodium zincate}{Na2ZnO2}} + H2\uparrow}\]
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