Home
Class 11
CHEMISTRY
By adding which of the following process...

By adding which of the following process, permanent hardness of water can be removed.

A

Sodalime

B

Sodiumbicarbonate

C

Washing soda

D

Sodium chloride

Text Solution

Verified by Experts

The correct Answer is:
C
Washing soda removes both the temporary and permanent hardness by converting soluble calcium and magnesium compounds into insoluble carbonates.
`CaCl_2 + Na_2CO_3 rarrCaCO_3 + 2NaCl`
`CaSO_4 + Na_2CO_3 rarr CaCO_3 + Na_2SO_4`
`Ca(HCO_3)_2 + Na_2CO_3 rarr CaCO_3 + 2NaHCO_3`
Promotional Banner

Topper's Solved these Questions

  • HYDROGEN

    ERRORLESS|Exercise NCERT BASED QUESTION (Hydrogen Peroxide)|39 Videos

  • HYDROGEN

    ERRORLESS|Exercise PAST YEARS QUESTIONS |16 Videos

  • HYDROGEN

    ERRORLESS|Exercise ASSERTION & REASON|6 Videos

  • HYDROCARBONS

    ERRORLESS|Exercise ASSERTION & REASON|18 Videos

  • IONIC EQUILIBRIUM

    ERRORLESS|Exercise ASSERTION AND REASON |9 Videos

Similar Questions

Explore conceptually related problems

Permanent hardness of water can be removed by

Temporary hardness of water can be removed

Which of the following substances cause permanent hardness of water

ERRORLESS-HYDROGEN-NCERT BASED QUESTION (Water or Hydride of Oxygen)
  1. Permanent hardness of water is due to the presence of

    Text Solution

    |

  2. Which of the following will cause softening of hard water ?

    Text Solution

    |

  3. By adding which of the following process, permanent hardness of water ...

    Text Solution

    |

  4. Permutit is technical name given to

    Text Solution

    |

  5. Sodium sulphate is soluble in water but barium sulphate is insoluble b...

    Text Solution

    |

  6. When two ice cubes are pressed over each other, they unite to form one...

    Text Solution

    |

  7. What is formed when calcium carbide reacts with heavy water?

    Text Solution

    |

  8. A sample of water containing some dissolved table sugar and common sal...

    Text Solution

    |

  9. Which of the following can effectively remove all types of hardness of...

    Text Solution

    |

  10. What is true about ice ?

    Text Solution

    |

  11. Hardness producing salt, whose solubility in water decreases with rise...

    Text Solution

    |

  12. Ordinary water is not used as a moderator in nuclear reactors because

    Text Solution

    |

  13. The solubility of an ionic compound is compared in heavy and simple wa...

    Text Solution

    |

  14. The process used for the removal of hardness of water is

    Text Solution

    |

  15. Which of the following compounds is used for water softening ?

    Text Solution

    |

  16. Ozone is used for purifying water because

    Text Solution

    |

  17. The maximum prescribed concentration of cadmium in drinking water in p...

    Text Solution

    |

  18. Which of the following acid is formed when SiF(4) reacts with water ?

    Text Solution

    |

  19. The pH of D(2)O and H(2)O at 298 K is

    Text Solution

    |

  20. Which of the following is not true ?

    Text Solution

    |