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Which one of the following processes wil...

Which one of the following processes will produce hard water?

A

Saturation of water with `CaCO_(3)`

B

Saturation of water with `MgCO_(3)`

C

Saturation of water with `CaSO_(4)`

D

Addition of `Na_(2)SO_(4)` to water

Text Solution

Verified by Experts

The correct Answer is:
C
Alkaline earth metal salts cause hardness. Temporary hardness is caused by soluble Caand Mg hydrogen carbonates. Soluble sulphates and chlorides of calcium and magnesium cause permanent hardness.
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BRILLIANT PUBLICATION-HYDROGEN-LEVEL -I
  1. The boiling point of water is high because

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  2. Which of the following hydrides is electron precise hydride?

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  3. Which one of the following processes will produce hard water?

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  4. Very pure hydrogen (99.9%) can be made by which of the following proce...

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  5. Which physical property of dihydrogen is wrong?

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  6. The conversion of atomic hydrogen into ordinary hydrogen is

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  7. Of the following statements regarding dihydrogen, identify the stateme...

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  8. The correct order of the thermal stability of hydrogen halides (H-X) i...

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  9. Electron-deficient, electron-precise and electron-rich hydrides are ty...

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  10. Which of the properties of interstitial hydrides is correct?

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  11. Which of the following has the highest extent of hydrogen bonding? A) ...

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  12. Which of the following hydrides is used for the storage of hydrogen an...

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  13. The pkw^@ of water

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  14. Which of the following has lower value for D2O than for H2O?

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  15. When hard water is passed through permutit, which ions are exchanged w...

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  16. Hydrogen peroxide acts both as an oxidizing and as a reducing agent de...

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  17. From the following statements regarding H2O2 choose the incorrect sta...

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  18. The O-O-H bond angle in H2O2 in the gas phase is

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  19. The bleaching property of hydrogen peroxide is due to its

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