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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 reacts readily with cold 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
Which metal is preferred for collecting hydrogen from Cold water? Write the balanced equation.
Which metal is preferred for collecting hydrogen from steam? Write the balanced equation for the case.
Give reason for the following:
Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
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.
Choose terms from the options given in brackets to complete this sentence.
Sodium ………………. reacts smoothly with cold water.
(metal, amalgam, in the molten state)
Using dilute sulphuric acid how would you differentiate between:
Sodium sulphide and sodium carbonate.
How would you identify the gaseous products evolved.
‘Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.’ Give reasons.
