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प्रश्न
Define the following term:
Hygroscopy
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उत्तर
It is the phenomenon by which substances absorb moisture from air, but only sufficiently so as to become wet.
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]
On heating this salt, a brown colored gas is evolved.
Write a balanced chemical equation for Action of dilute hydrochloric acid on magnesium sulphite.
Write a balanced equation for the preparation of the following salts:
Copper sulphate from Copper Carbonate.
How is common salt obtained from sea-water?
Why is sodium chloride required in our body?
Complete and balance the following chemical equation:
\[\ce{NaCl_{(aq)} + H2O_{(l)} ->[Electricity]}\]
Complete and balance the following chemical equation:
\[\ce{NaCl + NH3 + H2O + CO2 ->}\]
What is meant by ‘a family of salts’? Explain with examples.
The products of chloro-alkali process are ______.
Give one example of a salt which gives an aqueous solution having:
pH equal to 7
How many molecules of water of crystallisation (per formula unit) are present in:
Copper sulphate crystals
name two salts which are neutral, when dissolved in water.
Hard water required for an experiment is not available in a school laboratory. However, following salts are available in the laboratory. Select the salts which may be dissolved in water to make it hard for the experiment.
|
(1) |
Calcium Sulphate |
(2) |
Sodium Sulphate |
|
(3) |
Calcium Chloride |
(4) |
Potassium Sulphate |
|
(5) |
Sodium Hydrogen Carbonate |
(6) |
Magnesium Chloride |
(A) 1, 2 and 4
(B) 1, 3 and 6
(C) 3, 5 and 6
(D) 2, 4 and 5
Name the particles present in :
Strong electrolyte
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
Name two carbonates which do not produce carbon dioxide on heating.
Which of the following is not an acidic salt?
Salt which is formed by the partial replacement of hydrogen ions of an acid by a metal is called ______.
