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प्रश्न
Give reason for the following:
Cotton clothes get burnt with concentrated sulphuric acid.
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उत्तर
Cotton contains cellulose. When cotton is treated with concentrated sulphuric acid it removes water from cotton and carbon is left behind. This way cotton clothes get burnt.
\[\ce{(C6H10O5)n ->[Conc.H2SO4] 5(C)n + 6(H2O)n}\]
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संबंधित प्रश्न
Give two balanced reactions of the type to show the following property of sulphuric acid:
Oxidising agent
Name the following:
The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.
Name the Following:
The property used to prepare HCl and HNO3 from H2SO4.
Give reason for the following:
When carbon is heated with concentrated sulphuric acid, carbon dioxide is formed.
Give reason for the following:
When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
Give reason for the following:
H2SO4 cannot be prepared by heating sodium sulphate with conc. HCl or HNO3
Give reason for the following:
Concentrated sulphuric acid is kept in airtight bottles.
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
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 : Sulphur dioxide
Distinguish between the following pair of compounds using the test given with brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
