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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
Write a balanced chemical equation for the following:
Action of dilute hydrochloric acid on magnesium sulphite.
Write a balanced equation for the preparation of the following salt:
Zinc carbonate from zinc sulphate.
What are the two main ways in which common salt (sodium chloride) occurs in nature?
Give any two uses of common salt (sodium chloride).
Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.
What is meant by ‘a family of salts’? Explain with examples.
The products of chloro-alkali process are ______.
The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A, B, C and D?
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH)2SO4
Which of these salts will give:
- acidic solutions?
- neutral solutions?
- basic solutions (or alkaline solutions)?
Name a salts whose solubility increases with temperature.
name two salts which are acidic.
name two salts which are basic.
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
Distinguish by a chemical test sodium hydroxide solution and ammonium hydroxide solution.
A salt that is formed by the complete neutralization of an acid and a base is called ______ salt.
Salt is ______ in nature.
Salt which is formed by the partial replacement of hydrogen ions of an acid by a metal is called ______.
How is normal salt obtained? Give a suitable reaction.
You are provided with the list of chemicals mentioned below in the box:
| Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron |
Using suitable chemicals from the list given, write a balanced chemical equation for the preparation of the salt mentioned below:
Sodium zincate
Select the correct answer from A, B, C, D and E.
A compound which in the aqueous solution state, is neutral in nature.
