Home
Class 12
CHEMISTRY
Statement-1: Equivalent mass of KMnO(4) ...

Statement-1: Equivalent mass of `KMnO_(4)` is equal to one-third of its molecular mass when it acts as an oxidising agent in an alkaline medium.
Statement-2: Oxidation number of Mn is +7 in `KMnO_(4)`.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If both assertion and reason are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Correct explanation. In neutral medium, the oxidation number of Mn decreases from +7 `("in" KMnO_(4))" to "+4("in" Mn0_(2))`.
Promotional Banner

Topper's Solved these Questions

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise INTEGER ANSWER TYPE QUESTIONS|15 Videos

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise BRAIN STORMING MULTIPLE CHOICE QUESTIONS (MCQS)|13 Videos

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise MULTIPLE CORRECT OPTIONS TYPE MCQS|16 Videos

  • CYANIDES, ISOCYANIDES, NITROCOMPOUNDS AND AMINES

    DINESH PUBLICATION|Exercise Unit test - 8|20 Videos

  • ELECTROCHEMISTRY

    DINESH PUBLICATION|Exercise ADDITIONAL NUMERICAL PROBLEMS FOR PRACTICE|12 Videos

Similar Questions

Explore conceptually related problems

(a). IF both (A) and (R) are correct and (R) is the correct explanation of (A). (b). If both (A) and (R) are correct but (R) is not the correct explanation of (A). (c). If (A) is correct, but (R) is incorrect. (d). If (A) is incorrect, but (R) is correct. ltbr. (e) if both (A) and (R) are incorrect. Q. Assertion (A): Equivalent mass of KMnO_(4) is equal to one-fifth of its molecular mass when it acts as oxidising agent in mild basic medium. Reason (R): Oxidation number of Mn in KMnO_(4) is +7 .

Calculate the oxidation number of Mn in KMnO_(4) molecule.

Molecular mass of KMnO _(4) is

STATEMENT-1: Equivalent mass of KMnO_(4) in different mediums are different STATEMENT-2 KMnO_(4) can act as a oxidising agent .

DINESH PUBLICATION-D-AND -F BLOCK ELEMENTS-ASSERTION-REASON TYPE QUESTIONS
  1. Assertion : An aqueous solution of ferric chloride is acidic due to hy...

    Text Solution

    |

  2. Statement-1: The highest oxidation state of chromium in its compound i...

    Text Solution

    |

  3. Statement-1: Equivalent mass of KMnO(4) is equal to one-third of its m...

    Text Solution

    |

  4. Assertion : Cuprous salts are diamagnetic in nature. Reason : Cu^(+)...

    Text Solution

    |

  5. Assertion : Mercuric chloride becomes red on adding KI solution. Rea...

    Text Solution

    |

  6. Assertion: Ce^(4+) is used as an oxidising agent in volumetric analysi...

    Text Solution

    |

  7. When SO(2) is passed through acidified K(2)Cr(2)O(7) solution

    Text Solution

    |

  8. Assertion : FeSO(4).7H(2)O always contains traces of Fe^(3+) ions. R...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  11. Assertion : Change in colour of the acidic solution of breath is used ...

    Text Solution

    |

  12. Assertion: Manganese shows a number of oxidation states. Reason: The...

    Text Solution

    |

  13. Assertion: Actinoids show greater number of oxidation states than lant...

    Text Solution

    |

  14. Assertion : KMn0(4) is a coloured compound. Reason : Colour of KMn0(...

    Text Solution

    |

  15. Assertion : KMn0(4) is an oxidising agent in neutral, acidic and alkal...

    Text Solution

    |

  16. Assertion : Ionisation of transition metals involves loss of ns electr...

    Text Solution

    |

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

    Text Solution

    |

  18. Assertion (A): Potassium dichromate is preferred to Na(2)Cr(2)O(7) for...

    Text Solution

    |

  19. Assertion : The separation of lanthanoids is difficult. Reason : Lan...

    Text Solution

    |

  20. The chemistry of the actinoid elements is not so smooth as that of the...

    Text Solution

    |