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प्रश्न
Select the correct answer from the choice given in the options.
An anhydrous crystal _____.
विकल्प
blue vitriol
epsom salt
lead chloride
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उत्तर
An anhydrous crystal lead chloride.
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संबंधित प्रश्न
The sticky substance formed when soap is added to hard water is ______.
Give the names and formulae of two substances
Anhydrous substance
The process of separation or deposition of crystals from a hot saturated solution on gentle cooling of the solution is called ‘crystallization’. With reference to the statement explain what is meant by ‘water of crystallization. State which physical properties of a crystal are correlated with the water of crystallization.
Differentiate between ‘hydrated’ & ‘anhydrous’ crystals. Give the chemical formula of – the following hydrated crystals -
(a) Washing soda
(b) Gypsum
(c) Blue vitriol
(d) Epsom salt
(e) Glauber’s salt.
State which crystal from (a) to (e) is a pentahydrate.
Differentiate the function of concentrated sulphuric acid as a drying agent & as a dehydrating agent. Is fused calcium chloride a dehydrating or a desiccating agent. Give reasons.
Complete the statement by filling the blank with the correct word from the option.
Hygroscopic substance absorb moisture from the atmosphere & _______their original state.
Explain the following observation:
Why is fused calcium chloride or cone, sulphuric acid used in a desiccator?
Give a reason for the following:
Heating a hydrated copper sulphate crystal is deemed a chemical change.
Match the following
| 1. | Blue vitriol | CaSO4.2H2O |
| 2. | Gypsum | CaO |
| 3. | Deliquescence | CuSO4.5H2O |
| 4. | Hygroscopic | NaOH |
The molecular formula of green vitriol is MgSO4.7H2O.
