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The reaction involved during the removal...

The reaction involved during the removal of temporary hardness of water is

A

`Ca(HCO_3)_2 overset(Delta)(to) CaCO_3 + H_2O + CO_2 uarr `

B

`CaCl_2 +Na_2CO_3 to CaCO_3 darr + 2NaCl`

C

`MgSO_4 + Na_2Al_2Si_2O_8xH_2O to MgAl_2Si_2O_8 xH_2O + Na_2SO_4`

D

`2CaCl_2 + (NaPO_3)_6 to Na_2 [Ca_2(PO_3)_6] + 4NaCl`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-HYDROGEN AND ITS COMPOUNDS-OBJECTIVE EXERCISE - 2A (WATER, HARD WATER, HEAVY WATER)
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  3. Which salt is water soluble

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  6. The substance used for regenerating the exhausted permutit is

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  7. Deionised water is prepared by the following method

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  8. Heavy water is present in

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  9. The electrolyte in the preparation of D2O by electrolysis method is

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  10. Anhydride of deutero sulphuric acid is

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  11. Deutero methane is obtained by the deuterolysis of

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  12. NaOH +D(2) to NaOD+HDO is known as

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  13. When BiCl3 is dissolved in excess of D2O, the product formed is

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  14. 10^5g of a sample of water contained 16.2 g of Ca(HCO3)2 its hardness ...

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  15. Different samples of water containing each 100 ppm of CaCl(2),MgSO(4),...

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  16. 1000g of a water sample contained a calcium salt equivalent to 1g of C...

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  17. The physical constants which are less for D2O than H2O are

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  18. The O-H bond energy in water when compared to O-D bond energy in heavy...

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  19. Heavy water is toxic to micro-organism because of

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  20. Different water samples A, B, C and D have 150 ppm each of CaCl2, MgSO...

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