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प्रश्न
Distinguish between drying and dehydrating agent.
उत्तर
| Drying agent | Dehydrating agent | |
| 1. | They remove moisture from other substances. | They remove chemically combined elements of water in the ratio of 2:1 from a compound. |
| 2. | They are used to dry gases like chlorine and sulphur dioxide and in desiccators to keep substances dry. | They prepare substances like carbon monoxide, sugar charcoal etc. |
| 3. | They represent physical change. | They represent chemical change. |
| 4. | Examples: Fused calcium chloride CaCl2, Phosphorus pentoxide P2O5. | Examples: Cone. sulphuric acid H2SO4. |
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संबंधित प्रश्न
From the list of the following salts choose the salt that most appropriately fits the description is given in the following:
[AgCl, MgCl2, NaHSO4, PbCO3, ZnCO3, KNO3, Ca(NO3)2]
A deliquescent salt
What do you understand by water of crystallization?
Define efflorescence.
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid CaCI2
Why does common salt get wet during the rainy season?
State your observation when the following is exposed to the atmosphere.
Washing soda crystals
Answer the question below:
By what means, other than heating, could you dehydrate copper sulphate-5-water and obtain anhydrous copper sulphate?
Name the salt which on hydrolysis forms neutral solution. Give a balanced equation for each reaction.
Select the correct answer from A, B, C, D and E.
A deliquescent compound.
Give a suitable chemical term for:
A definte number of water molecules bound to some salts.
