Home
Class 11
CHEMISTRY
A water sample contains 1 millimole ofMg...

A water sample contains 1 millimole of`Mg^(2+) ion per litre. calculate the hardness of water sample in ppm unit.

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2018

    UNITED BOOK HOUSE|Exercise EXAMPLE|3 Videos

  • Question Papers 2018

    UNITED BOOK HOUSE|Exercise EXAMPLE|61 Videos

Similar Questions

Explore conceptually related problems

A water sample contains 1 millimole of Mg^(2+) ion per litre. Calculate the hardness of the water sample in ppm unit.

A sample of pond water contains 40mg of organic matter requires 32 mg of dissolved oxygen.if pond water contains 1100mg of organic matter per two litres, calculate BOD value of the water sample.

1L of a sample of hard water contains 1 mg of each of CaCl_(2) and MgCl_(2) . Express the harnedd of the sample in ppm, in terms of CaCO_(3) .

1L of a sample of hard water contains 1 mg "CaCl"_(2) and 1 mg "MgCl"_(2) . Estimate the degree of hardness of this sample of water.

Calculate the hardness of Water When 1gm FeCl_3 dissolved in 1 liter water.

CS_2 is a colourless, highly inflammable liquid used in the manufacture of rayon and cellophane. A sample contains 0.0205 mol CS_2 . Calculate the mass of CS_2 in the sample.

1 L of river water contains 6 mg Mg^(2+) and 20 mg Ca^(2+) ions as chloride salts. Determine the degree of hardness of that sample of river water.

10 mL of 0.01 (N) HCl is required for titrating 100 mL of a sample of cold water using methyl orange as indicator. Determine the temporary hardness of that sample of water.

A sample of Ar vapour contains 3xx10^(4) atoms of Ar in a vacuum tube with a volume of 5 mL of -100^(@)C . Calculate the presure of the vapour in microtorr unit.

UNITED BOOK HOUSE-QUESTION PAPERS 2016-EXERCISE
  1. What is the oxidation number of N atom is NaN3 molecule?

    Text Solution

    |

  2. Balance the following chemical equation by ion electron method : MnO...

    Text Solution

    |

  3. A water sample contains 1 millimole ofMg^(2+) ion per litre. calculate...

    Text Solution

    |

  4. What do you understand by "Trailing of Mercury?

    Text Solution

    |

  5. What do most of the lithium salts are present as hydrate one?

    Text Solution

    |

  6. Which of the alkaline earth metal hydroxide are amphoteric in nature.

    Text Solution

    |

  7. What is hydrohlith?

    Text Solution

    |

  8. Why does BF3 behave as Lewis acid?

    Text Solution

    |

  9. Write with equation what happens when? Water is added to calcium carbi...

    Text Solution

    |

  10. Write with equation what happens when? Enthyl alcohol is heated with c...

    Text Solution

    |

  11. By which property the stability of (CH3)3C^+ ion could be explained?

    Text Solution

    |

  12. Why methane could not be prepared by Wurtz reaction?

    Text Solution

    |

  13. State law of mass action.

    Text Solution

    |

  14. For the reaction N2 + 3H2 harr 1/2 N2 + 3/2 H2 is K2. Then calculat...

    Text Solution

    |

  15. Calculate the pH 0.01 (m) ch3COOH at 25^@C. (Given dissociation con...

    Text Solution

    |

  16. What is buffer solutio? Give one example of acidic buffer. In which ca...

    Text Solution

    |

  17. Why does dissociation rate H2S is decreased in presence of HCL in aque...

    Text Solution

    |

  18. What is inorganic benzene ? How does it prepare? State with condition ...

    Text Solution

    |

  19. Dimond is non conductor of electricity but Graphatite is a conductor o...

    Text Solution

    |

  20. Why Friedel-Crafts asylation of benzene is favourable than that of Fri...

    Text Solution

    |