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प्रश्न
Why is sulphuric acid known as king of chemicals and oil vitriol ?
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उत्तर
Sulphuric acid is known as king of chemicals because in almost all industries it is used directly or indirectly.
In 8th century it was obtained by distillation of green vitriol (FeSO4.7H2O). It is called oil of green vitriol because of its oily appearance and because of the fact that it was present in vitreous or glassy substances like ferrous sulphate etc.
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संबंधित प्रश्न
A, B, C, and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated.
A = Typical acid property
B = Non volatile acid
C = Oxidizing agent
D = Dehydrating agent
Choose the property (A, B, C or D) depending on which is relevant to each of the following
1) Preparation of Hydrogen chloride gas
2) Preparation of Copper sulphate from copper oxide.
3) An action of conc. Sulphuric acid on Sulphur.
In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.
Give two balanced reactions of the type to show the following property of sulphuric acid:
Non-volatile nature
Give a chemical test to distinguish between dilute sulphuric acid and conc. sulphuric acid.
Give reason for the following:
When barium chloride is added to dilute sulphuric acid, a white precipitate is formed.
How are the following conversion brought about? Give equation and condition:
Oxalic acid to carbon monoxide.
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.
Complete the following sentence, choosing the correct word from the given options.
"Concentrated sulphuric acid is used in the laboratory preparation of nitric acid and hydrochloric acid because it is ____________ in comparison to these two acids."
What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with :
(i) Potassium nitrate
(ii) carbon
Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?
