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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
Give two example of Solvent other than water.
Explain the term:
Solute
In which of the following substances will there be
Increase in mass
What is soap? For what is it used?
Why does the hardness of water render it unfit for use in a washing purposes.
Give a reason why water is called a ‘universal solvent’ but, an alkali is not.
Give a reason why boiled water tastes flat.
Sheela, Saima and Ravi have to dissolve maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice cold milk. Sheela managed to get milk at room temperature. Whom do you think would win the game and why?
State whether the following statement is true or false.
Water can be separated from salt by evaporation.
Paheli was feeling thirsty but there was only a pot of water at home which was muddy and unfit for drinking. How do you think Paheli would have made this water fit for drinking if the following materials were available to her.
| Alum | tub | muslin cloth | gas stove | thread | pan and lid |
