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प्रश्न
Using dilute sulphuric acid how would you differentiate between:
Copper and magnesium
How would you identify the gaseous products evolved.
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उत्तर
Action of dil. H2SO4 on
Copper — has no action
Magnesium — produces H2 burns with blue flame with pop-sound.
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संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
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.
Write down what happens when these metals are treated as follows:
- Heated in presence of air
- Heated with dil.HCl
- Added to an aqueous solution of zinc sulphate.
Which metal is preferred for collecting hydrogen from steam? Write the balanced equation for the case.
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 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.
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
What do you observe when dilute sulphuric acid is added to Zinc granules.
State why hydrogen is not prepared in the laboratory by the action of lead with dilute hydrochloric acid.
