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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
Write a balanced chemical equation for the following:
Action of concentrated sulphuric acid on Sulphur.
The acid which is used in the preparation of a volatile acid
Give two balanced reactions of each type to show the following properties of sulphuric acid:
Hygroscopic nature
Name the following:
The precipitate obtained by treating carbon with hot concentrated sulphuric acid.
What would you observe in the following case?
Concentrated sulphuric acid is added to equal volumes of cold water.
Give reason for the following:
Concentrated sulphuric acid should not be added to oxalic acid or formic acid in the open laboratory.
Give reason for the following:
When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
Choose the current answer from the options given below :
The catalyst used for the oxidation of SO2 to SO3 in contact process is
Write the equation of the following reaction:
Sulphur is heated with concentrated sulphuric acid.
State your observation of the following case:
When dilute hydrochloric acid is added to sodium carbonate crystals.
