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प्रश्न
Name or state the following:
A liquid hydroscopic substance.
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उत्तर
A liquid hygroscopic substance - concentrated sulphuric acid (cone. H2SO4)
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संबंधित प्रश्न
What do you observe when Blue vitriol is heated?
Water turns the colour of anhydrous copper sulphate .................
The sticky substance formed when soap is added to hard water is ______.
Give the names and formulae of two substances
Anhydrous substance
What are drying or desiccating agents? Give 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.
Explain the following observation:
Why is fused calcium chloride or cone, sulphuric acid used in a desiccator?
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.
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
'A' is a blue coloured crystalline salt. On heating, it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.
