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प्रश्न
Match the following
| 1. | Blue vitriol | CaSO4.2H2O |
| 2. | Gypsum | CaO |
| 3. | Deliquescence | CuSO4.5H2O |
| 4. | Hygroscopic | NaOH |
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उत्तर
| 1. | Blue vitriol | CuSO4.5H2O |
| 2. | Gypsum | CaSO4.2H2O |
| 3. | Deliquescence | NaOH |
| 4. | Hygroscopic | CaO |
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संबंधित प्रश्न
Give two examples of Crystalline anhydrous substances.
Water turns the colour of anhydrous copper sulphate .................
Give one word for the following statement:
Water molecules in loose chemical combination with other substances.
State the methods by which hydrated salts can be made anhydrous.
What are hydrous substances? Explain with examples.
Complete the statement by filling the blank with the correct word from the option.
Hygroscopic substance absorb moisture from the atmosphere & _______their original state.
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes that occur when hydrated copper sulphate is heated.
Select the correct word from the words in option to complete the sentence:
Efflorescence occurs when the vapour pressure of the hydrated crystals is ____ than the vapour pressure of the atmospheric humidity.
Select the correct answer from the choice given in the options.
An anhydrate of a heptahydrate salt _____.
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
