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प्रश्न
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
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उत्तर
It is not possible to produce hydrogen in a laboratory by reacting calcium with diluted sulfuric acid since the reaction is extremely explosive and practically impossible.
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संबंधित प्रश्न
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from hot water.
Hydrogen can be prepared with the metal zinc by using:
acid
Give an equation.
Hydrogen can be prepared with the metal zinc by using: alkali
Give an equation.
Give an equation to express the reaction between:
Steam and red hot iron
Thin strips of magnesium, copper, and iron are taken.
Arrange these metals in descending order of reactivity.
Which metal is preferred for collecting hydrogen from Cold water? Write the balanced equation.
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.
Write a balanced equation for the reaction named metal with (i) boiling water (ii) steam.
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.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
