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प्रश्न
Give two examples of hydrated substances.
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उत्तर
- Washing soda (Na2CO3.10H2O)
- Gypsum (CaSO4.2H2O)
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संबंधित प्रश्न
What do you understand by
Hard water
Explain the permutit method for softening hard water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Differentiate between Temporary & permanent hard water with suitable examples.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you prove the advantage of detergent over soap.
Give two natural sources of hard water.
A sample of water is given in a trough. State how would you prove experimentally whether the given sample is hard water or soft water.
Two samples of water are placed in a beaker individually. State how you will determine experimentally which of the two samples contains permanent hard water.
What is the reason for the hardness of water?
