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प्रश्न
What are the observations and conclusions when tap water is boiled and evaporated in watch glass?
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उत्तर
When tap water is boiled and evaporated:
Observations:
- A number of concentric rings of solid matter are seen on the watch glass after evaporation of tap water.
Conclusion:
- Tap water contains dissolved salts, minerals and impurities.
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संबंधित प्रश्न
Discuss the importance of water as a solvent for our body .
State the term: (Do not give examples)
A solution where solvent is a liquid other than water.
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.
Name the gas that:
Does not affect acidified K2Cr2O7 paper but turns lime water milky.
Give a reason why water is called a ‘universal solvent’ but, an alkali is not.
Give a reason why boiled water tastes flat.
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.
