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प्रश्न
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?
उत्तर
- Zn + H2SO4 → ZnSO4 + H2
- Fe + H2SO4 → FeSO4 + H2
Hydrogen cannot be prepared from metals which are below it in the activity series of metals such as copper because only metals that are more reactive than hydrogen can displace it from acids.
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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
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from dilute HCl.
Hydrogen can be prepared with the metal zinc by using: alkali
Give an 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.
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Which metal gives hydrogen with all of the following: water, acids, alkalis?
Which of the following metals does not give hydrogen with acids?
What do you observe when dilute sulphuric acid is added to Zinc granules.
‘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.
