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प्रश्न
Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?
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उत्तर
NaOH and KOH
Zn + 2NaOH → Na2ZnO2 + H2
Zn + 2KOH → K2ZnO2 + H2
Metals such as zinc, lead, and aluminium have a unique nature. They react with acids and can even react with hot alkalis to form hydrogen and soluble salt.
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संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from hot water.
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from dilute HCl.
From the knowledge of activity series, name a metal which shows the following properties:
It forms a base which is insoluble in water.
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
Give an equation to express the reaction between:
Steam and red hot iron
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Write an equation for the reaction.
Hydrogen is obtained by displacement from:
- dilute sulphuric acid
- dilute hydrochloric acid
Write equations using zinc and iron.
Why does copper not show similar behavior?
Helium is preferred to hydrogen for filling balloons because it is:
Correct the following statement:
Very dilute nitric acid reacts with iron to produce hydrogen.
