Advertisements
Advertisements
प्रश्न
Give a reason why water is called a ‘universal solvent’ but, an alkali is not.
Advertisements
उत्तर
Water is a polar covalent compound. When it comes in contact with any substance it breaks the electrostatic forces holding the molecules of that substance. Thus, the molecules break loose from the substance and hence dissolve in water. Thus, water is called a universal solvent and an alkali is not.
APPEARS IN
संबंधित प्रश्न
Give two examples of Drying agent.
Discuss the importance of water as a solvent for our body .
Discuss the importance of water as a solvent for plants.
What do you mean by solubility of a solute in a solvent ?
What is the importance of dissolved salts in water?
Explain why boiled or distilled water tastes flat.
Explain why:
Ice at zero degrees centigrade has greater cooling effect than water at 0oC.
Explain the term:
Solute
Explain the terms:
Solvent
State the term: (Do not give examples)
A solution where solvent is a liquid other than water.
Explain why:
Lakes and rivers do not suddenly freeze in the winters.
What is soap? For what is it used?
Why does the hardness of water render it unfit for use in a boiler.
Give a reason why boiled water tastes flat.
Select the correct answer of the following statement:
The medium of dissolution which allows the solute to dissolve in it.
State why ‘Water is considered a universal solvent’. Give the reason for the same.
Select the correct answer from the choice given in the options.
A deliquescent salt of a divalent metal _____.
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 |
