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प्रश्न
Name the following.
The salt formed when aluminium reacts with potassium hydroxide, during the preparation of hydrogen from alkalis.
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उत्तर
Potassium metal aluminate
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संबंधित प्रश्न
From the knowledge of activity series, name a metal which shows the following properties:
It forms a base which is insoluble in water.
Give an equation to express the reaction between:
Steam and red hot iron
Give an equation to express the reaction between:
Calcium and water
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.
Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium
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?
Give a reason for the following.
Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.
Which metal gives hydrogen with all of the following: water, acids, alkalis?
Correct the following statement:
Very dilute nitric acid reacts with iron to produce hydrogen.
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
