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प्रश्न
Define the following term : Hygroscopic substance
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उत्तर
Hygroscopic substance : The compound which absorbs water vapour from the atmosphere.
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संबंधित प्रश्न
Write balanced chemical equations for the action of dilute sulphuric acid on sodium sulphite.
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.
Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with carbon?
Give reason for the following:
H2SO4 cannot be prepared by heating sodium sulphate with conc. HCl or HNO3
Why is sulphuric acid known as king of chemicals and oil vitriol ?
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Iron (II) sulphate from iron.
Write the balanced chemical equation for the following conversion:
Lead sulphate from lead nitrate solution and dilute sulphuric acid.
The gas evolved when dilute sulphuric acid reacts with iron 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. \[\ce{S + 2H2SO4 -> 2H2O + 3SO2}\]
Convert the following reaction into a balanced chemical equation:
Sodium hydroxide to sodium sulphate using sulphuric acid.
