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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
Write balanced chemical equations to show : The oxidizing action of conc. Sulphuric acid on carbon
In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.
Give a chemical test to distinguish between dilute sulphuric acid and dilute hydrochloric acid.
Name the following :
The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid.
Give main difference between drying agent and dehydrating agent.
State your observation for the following case :
Moist blue litmus is introduced into a gas jar of sulphur dioxide.
Write balanced chemical equation to show :
The behavior of H2SO4 as an acid when it reacts with magnesium.
Identify the gas evolved and give the chemical test in the following case:
Dilute hydrochloric acid reacts with iron (II) sulphide.
A, B and C are the chemical properties of sulphuric acid:
A. Oxidizing agent
B. Dehydrating agent
C. Non-volatile acid
Match the following equations 1 to 3 to the above chemical properties of sulphuric acid.
1. \[\ce{KNO3 + H2SO4 -> KHSO4 + HNO3}\]
2. \[\ce{C12H22O11 -> 12C + 11H2O}\]
3. \[\ce{S + 2H2SO4 -> 2H2O + 3SO2}\]
Rewrite the following statement by adding the correct word, as shown in the example:
|
Example: Given Statement: Ammonia changes moist red litmus to blue. Correct Statement: Aqueous ammonia changes moist red litmus to blue. |
Sulphuric acid acts as a dehydrating agent.
