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प्रश्न
What is observed when hot, concentrated caustic soda solution is added to zinc? Write a balanced equation.
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उत्तर
\[\ce{Zn + \underset{concentrated}{\underset{Hot and}{2NaOH}}-> \underset{(colourless)}{\underset{Sodium zincate}{Na2ZnO2}} + H2\uparrow}\]
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संबंधित प्रश्न
Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same.
What do you observe when ammonium salt is heated with caustic soda solution?
Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution respectively. Each solution is divided into two portions (i) and (ii). Describe the effect of
- adding sodium hydroxide solution to each portion in turn till it is in excess.
- adding ammonium hydroxide to each portion in turn till it is in excess.
State what do you observe when:
Neutral litmus solution is added to alkaline solution
Identify the substance Q based on the information given below:
The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.
A white solid A when heated with sodium hydroxide solution, gives a pungent gas B, which turns red litmus blue. The solid, when dissolved in dilute nitric acid and treated with silver nitrate gives a white precipitate of C which is soluble in an ammonia solution.
State your observation of the following case :
When excess sodium hydroxide is added to calcium nitrate solution
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to lead nitrate solution and zinc nitrate solution.
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to ferrous nitrate and lead nitrate.
Write the word equation when ammonium salt is heated with caustic soda solution.
