Home
Class 12
CHEMISTRY
Assertion: K2Cr2O7 is used as primary st...

Assertion: `K_2Cr_2O_7` is used as primary standard in volumetric analysis.
Reason: It has a good solubility in water.

A

If both assetion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are ture but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C

Correct Reason: `K_(2) Cr_(2) O_(7)` is not much soluble in cold water. However, it is obtained in pure state and is not hygroscopic in natue.
Promotional Banner

Topper's Solved these Questions

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise AIPMT/NEET Questions|31 Videos
  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise AIIMS Questions|31 Videos
  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise Lanthanides And Actinides|29 Videos
  • SURFACE CHEMISTRY

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Assertion: K_2Cr_2O_7 is used as primary standard in volumetric analysis. Reason: It has a good solubilityin water.

Assertion: Ce^(4+) is used as an oxidising agent in volumetric analysis. Reason: Ce^(4+) has the tendency to attain +3 oxidation state.

Assetion : Ce^(3+) is used as an oxidizing in volumetric analysis. Reason : The nubmer of uparied electrons in the following gaseous inon: Mn^(3+), Cr^(3+), V^(3+) and Ti^(3+) are 4,3,2 and 1 respctively.

Which among Na_(2)Cr_(2)O_(7) and K_(2)Cr_(2)O_(7) is more suitable as a primary standard in volumetric analysis?

Assertion: Acidimetry and alkalimetry are the terms used in volumetric analysis. Reason: The reactant left the chemical reaction is called limiting reagent.

A2Z-THE D AND F BLOCK ELEMENTS-Section B - Assertion Reasoning
  1. Assertion : Silver intrate is reduced to silver by the hydrides of 15t...

    Text Solution

    |

  2. Assertion : Ag(2) S + 4 KCN 2K [Ag(CN)(2)] + K(2) s Reason : The rea...

    Text Solution

    |

  3. Assertion: K2Cr2O7 is used as primary standard in volumetric analysis....

    Text Solution

    |

  4. Assertion : The value of enthaply of atomisation is maximum at about t...

    Text Solution

    |

  5. Assertion: The spin only magnetic moment of Sc^(3+) is 1.73 BM. Reas...

    Text Solution

    |

  6. Assertion : Hydrochloric acid is not used to acidify a KMnO(4) solutio...

    Text Solution

    |

  7. Assertion : Solution of Na(2) CrO(4) in water is intensely electrons. ...

    Text Solution

    |

  8. Assertion : Reaction of thionyl chloride with hydrated ferric chloride...

    Text Solution

    |

  9. Assertion : Hyydroquinone is used as a developer for developing black ...

    Text Solution

    |

  10. Assertion : The order of atomic radii of Cu, Ag and Au is Cu lt Ag ~~ ...

    Text Solution

    |

  11. Assertion : 4d and 5d series elements have nearly same atomic radius. ...

    Text Solution

    |

  12. Assertion: Tungsten has very high melting point. Reason: Tungsten is...

    Text Solution

    |

  13. Assertion: Mn atom loses ns electrons first during ionisation as compa...

    Text Solution

    |

  14. Assertion : CuSO(4).5H(2)O on heating to 250^(@)C losses all the five ...

    Text Solution

    |

  15. Assertion : Silver chloride dissolves in execss ammonia. Reason : A...

    Text Solution

    |

  16. Assertion : CrO(3) is an acid anhydride. Reason: CrO(3) is obtained ...

    Text Solution

    |

  17. Assertion : Solid potassium dichromate gives greenish yellow vapour wi...

    Text Solution

    |

  18. Assetion : Permanganate titrations is not carried out in presence of h...

    Text Solution

    |

  19. The free gaseous Cr atom has six unpaired electrons. Half-filled s-o...

    Text Solution

    |

  20. Assertion : K(2)CrO(4) has yellow colour due to charge transfer. Rea...

    Text Solution

    |