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The hardness of water of a tube well is ...

The hardness of water of a tube well is 300 ppm. What do you mean by this statement?

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The statement means that in million parts by mass of the sample of water from the tube well contains salts causing its hardness which are equivalent to 300 parts by mass of calcium carbonate.
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CHHAYA PUBLICATION-HYDROGEN-WARM UP EXERCISE
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  2. Why is hard water not used for cooling purpose in industry?

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  3. The hardness of water of a tube well is 300 ppm. What do you mean by t...

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  4. Will the water obtained by passing hard water through anion exchange r...

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  5. A sample of water contains MgSO(4) and urea. How can they be eliminat...

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  7. Explain why in the laboratory preparation of H(2)O(2) : the reaction...

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  8. Explain why in the laboratory preparation of H(2)O(2) : dilute H(2)S...

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  9. Explain why in the laboratory preparation of H(2)O(2) : A thin paste...

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  12. Explain why in the laboratory preparation of H(2)O(2) : The paste of...

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  13. Explain why in the laboratory preparation of H(2)O(2) : It is better...

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  14. Explain why in the laboratory preparation of H(2)O(2) : MnO(2) " "o...

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  15. What is Merck's perhydrol? How can it be prepared ?

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  16. How can H(2)O(2) be manufactured by using 50% H(2)SO(4) solution?

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  17. What is Marshall's acid?

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  18. How can H(2)O(2) solution be prepared by electrolysing an equimolar mi...

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  19. Explain why a solution of H(2)O(2) cannot be concentrated by distillat...

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  20. Which organic compound is used for manufacturing H(2)O(2) conveniently...

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