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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.
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
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from hot water.
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acid
Give an equation.
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Write an equation for the reaction.
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.
Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.
Write a balanced equation for the reaction named metal with (i) boiling water (ii) steam.
Give a chemical test to distinguish between the following gases:
Hydrogen chloride and hydrogen sulphide
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
