Home
Class 11
CHEMISTRY
Calgon used as a water softener is...

Calgon used as a water softener is

A

`Na_(2) [Na_(4),(PO_(3))_(6)]`.

B

`Na_(4),[Na_(2),(PO_(3))_(6)] `

C

`Na_(2), [Na_(4)(PO_(4))_(5)] `

D

`Na_(4), [Na_(4),(PO_(4))_(6)]`

Text Solution

Verified by Experts

The correct Answer is:
A
Calgon is sodium hexametaphosphate `Na_(2),[Na_(2)(PO_(3))_(6)]` It is used as water softener.
Promotional Banner

Topper's Solved these Questions

  • HYDROGEN

    BRILLIANT PUBLICATION|Exercise LEVEL -II|45 Videos

  • HYDROGEN

    BRILLIANT PUBLICATION|Exercise LEVEL -III ( Single Correct Answer Type ) |5 Videos

  • HYDROGEN

    BRILLIANT PUBLICATION|Exercise LEVEL - II (Assertion Reason Type Questions)|5 Videos

  • HYDROCARBONS

    BRILLIANT PUBLICATION|Exercise LEVEL-III (LINKED COMPREHENSION TYPE)|9 Videos

  • ISOMERISM AND REACTION MECHANISM

    BRILLIANT PUBLICATION|Exercise LEVEL - III (Linked Comprehension Type) (Paragraph III )|3 Videos

Similar Questions

Explore conceptually related problems

Polyphosphates are used as water softening agents because they

Assertion : Calgon is used in the manufacture of soft water used for laundry purpose Reason : Ca^(2+) and Mg^(2+) ions present in hardwater are rendered ineffective by calgon forming their soluble complexes. (I) If both assertion and reason are correct and reason is the correct explanation of assertion. (II) Both assertion and reason are correct but reason is not the correct explanation of assertion (III) If assertion is correct and reason is not correct (IV) Assertion is wrong and reason is correct

One of the chemical methods of softening water is sequestration. In this process :

Two Important oxides of carbon are carbon monox ide and carbon dioxide. What are producer gas and water gas? Mention their uses.

a. What is heavy water? Mention one use of heavy water. b. Explain why hydrogen peroxide is not stored in glass vessels. c. What is calgon? What is its use?

BRILLIANT PUBLICATION-HYDROGEN-LEVEL -I
  1. The O-O-H bond angle in H2O2 in the gas phase is

    Text Solution

    |

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

    Text Solution

    |

  3. Calgon used as a water softener is

    Text Solution

    |

  4. Hydrogen has the tendency to gain one electron to acquire helium confi...

    Text Solution

    |

  5. Ortho-Hydrogen and para-hydrogen resemble in which of the following pr...

    Text Solution

    |

  6. The bond angle and dipole moment of water, respectively, are

    Text Solution

    |

  7. Which of the following produces hydrolith with dihydrogen?

    Text Solution

    |

  8. H2O2 is always stored in black bottles because

    Text Solution

    |

  9. Hydrides of elements of Groups 3–5 are generally called

    Text Solution

    |

  10. Decomposition of H2O2 is prevented by

    Text Solution

    |

  11. In which of the following compounds does hydrogen exhibit a negative o...

    Text Solution

    |

  12. When water is dropped over sodium peroxide, the colourless gas produce...

    Text Solution

    |

  13. What is false about Lane's process?

    Text Solution

    |

  14. The volume of 10 volume H2O2 required to liberate 500 mL of O2 at ST...

    Text Solution

    |

  15. On burning hydrogen in air the colour of flame is

    Text Solution

    |

  16. When electric current is passed through an ionic hydride in molten sta...

    Text Solution

    |

  17. Among CaH2,NaH, NH3, and B2 H6 which are covalent hydrides?

    Text Solution

    |

  18. Both temporary and permanent hardness is removed on boiling with

    Text Solution

    |

  19. The mass per cent of H2O2 in '30 volume H2O2 is

    Text Solution

    |

  20. Hard water is not fit for washing clothes because

    Text Solution

    |