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प्रश्न
Give main difference between drying agent and dehydrating agent.
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उत्तर
Difference between Drying agent and dehydrating agent:
| S.NO. | Drying agent | Dehydrating agent |
| 1. | Drying agent removes superficial water sticking to the surface of a given substance. | Dehydrating agent removes atoms of hydrogen and oxygen in the form of water molecules from the composition of a substance. |
| 2. | Drying agent brings about a physical chnge. | Dehydrating agent brings about chemical change. |
| 3. | No change in the chemical composition of a substance takes place when drying agent is used. | The dehydrating agent brings about a change in the chemical composition of a substance. |
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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.
Give reason for the following:
Cotton clothes get burnt with concentrated sulphuric acid.
Describe the reaction that show
Concentrated sulphuric acid behaves as oxidizing agent.
Name the catalyst used in the process.
Give a balanced chemical equation for the action of sulphuric acid on the following:
Sulphur
Write balanced chemical equation to show :
The behavior of H2SO4 as an acid when it reacts with magnesium.
State your observation of the following case:
When dilute hydrochloric acid is added to sodium carbonate crystals.
Give balanced chemical equation to prepare the following salt:
Sodium sulphate using dilute sulphuric acid
The salt is formed when concentrated sulphuric acid reacts with KNO3 above 200°C.
Differentiate between the following pair based on the criteria given in the bracket:
Cane sugar and hydrated copper sulphate [using concentrated H2SO4]
