Advertisements
Advertisements
प्रश्न
How the temporary and permanent hardness is removed?
उत्तर
Temporary hardness can easily be removed by boiling. permanent hardness can be removed by the following methods:-
(i) By the addition of washing soda
(ii) By ion exchange method
(iii) By the use of polyphosphate water softener
APPEARS IN
संबंधित प्रश्न
Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.
Complete the following chemical reaction.
\[\ce{AlCl_{3(g)} + H_2O_{(l)} ->}\] ?
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
What is the difference between the terms ‘hydrolysis’ and ‘hydration’?
Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water, and (iii) alkaline water? Write equations wherever necessary.
Why is water used in hot-water bottles?
How does it occur in the free state and in the combined state.
The density of water is maximum at ________.
______ does not react with water at any temperature.
Write a short note on the catalytic nature of water.
Write the chemical equation for the production of water when zinc reacts with sulphuric acid.
