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प्रश्न
Give two examples for Efflorescent substance.
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उत्तर
Washing soda and glauber’s salt (Na2SO4.10 H2O)
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संबंधित प्रश्न
What is the effect on boiling point of water when pressure is increased?
Boiling removes the ................ hardness of water.
What do you understand by
Hard water
State the disadvantages of using hard water.
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 distinguish between hard and soft water?
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.
State the causes of hardness in water.
Permanent hardness of water is due to the presence of _______.
What are the methods of removing hardness of water?
