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प्रश्न
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.
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उत्तर
Potassium and sodium react violently with acid. Hence, potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
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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.
Give an equation to express the reaction between:
Calcium and water
Which metal is preferred for collecting hydrogen from:
Write the balanced equation
Hot water
What do you observe when hydrogen gas is passed through a soap solution?
Select the odd one out and justify your answer.
Zn, Fe, Mg, and Na
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
‘Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.’ Give reasons.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
