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प्रश्न
What is the advantage of a detergent over soap?
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उत्तर
Detergents are more soluble in water than soap and are unaffected by the hardness of water as their calcium salts are soluble in water.
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संबंधित प्रश्न
What are the observations and conclusions when tap water is boiled and evaporated in watch glass?
How is air dissolved in water different from ordinary air?
Explain the term:
Solute
Explain why:
The solute cannot be separated from a solution by filtration.
In which of the following substances will there be
No change in mass when they are exposed to air?
Sodium chloride
Iron
Conc. sulphuric acid
Table salt
Sodium carbonate crystals
Give a reason why water is called a ‘universal solvent’ but, an alkali is not.
Give a reason why boiled water tastes flat.
Select the correct answer from the choice given in the options.
A deliquescent salt of a divalent metal _____.
Give a reason for the following.
Water is a universal solvent.
State whether the following statement is true or false.
Water can be separated from salt by evaporation.
