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प्रश्न
Give reason for the following:
Concentrated sulphuric acid is kept in airtight bottles.
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उत्तर
Concentrated sulphuric acid absorbs water vapours from the atmosphere. Hence it should be kept in air tight bottles.
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संबंधित प्रश्न
State your observations when Concentrated Sulphuric acid is added to Sugar Crystals
Name the products formed when hot and concentrated sulphuric acid reacts with Carbon.
What would you observe in the following case?
Dilute sulphuric acid is added to ferrous sulphate solution.
Name the anion [negative ion] present in the following compound:
Compound D when warmed with dilute H2SO4 gives a gas which turns acidified potassium dichromate solution green.
Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Carbon dioxide
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Iron (II) sulphate from iron.
State your observation for the following case :
Moist blue litmus is introduced into a gas jar of sulphur dioxide.
What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with :
(i) Potassium nitrate
(ii) carbon
Write the observation for the following:
Decomposition of bicarbonates by dil. H2SO4.
\[\ce{2NaHCO3 + H2SO4 -> Na2SO4 + 2H2O + 2CO2}\]
Distinguish between the following pair of compounds using the test given with brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
