Home
Class 12
CHEMISTRY
Assertion (A) : Fe is protected from cor...

Assertion `(A) : Fe` is protected from corrosing by connecting `Mg` metal with it.
Reason `(R) : Fe` acts as cathode and `Mg` as anode which gradully disappears.

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, `(R)` is correct.

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exerciseinterger|8 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercisefill In The Blanks|25 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercises Ingle Correct|178 Videos
  • D AND F BLOCK ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|29 Videos
  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives (Subjective)|14 Videos

Similar Questions

Explore conceptually related problems

Assertion (A) : Metallic character order is K gt Mg gt Al gt B . Reason (R ) : Along the period (rarr) metallic character increases and decreases down the group (darr) .

Assertion (A) : Fe^(3+) (g) ion is more stable than Fe^(2+)(g) ion. Reason (R) : Fe^(3+) ion has more number of unpaired electrons than Fe^(2+) ion.

Assertion (A): Be and Mg impart characterstic colour to the flame. Reason (R ): As compared to other alkaline earth metals, ionisation enthalpy of Be and Mg is low.

Assertion (A): When an aqueous solution of KNO_(3) is electrolyzed, potassium is liberated at the cathode. Reason (R): K^(+) ions are discharged at cathode and NO_(3)^(-) at anode.

Assertion(A): Fe^(3+) can be used for coagulation of As_(2)S_(3) sol. Reason (R): Fe^(3+) reacts with As_(2)S_(3) to give Fe_(2)S_(3.)

CENGAGE CHEMISTRY-ELECTROCHEMISTRY-Exerciseassertion -Reasoning
  1. Assertion (A): The mobility of Na^(o+) is lower than that of K^(o+) io...

    Text Solution

    |

  2. Assertion (A): Equivalent conductance increase with dilution for an el...

    Text Solution

    |

  3. Assertion (A): wedge(m(H^(o+))) and wedge(m(overset(c)(O)H)) ions are ...

    Text Solution

    |

  4. Assertion (A): Ionic conductivities increase with increase of temperat...

    Text Solution

    |

  5. Assertion (A: Cell constant is the EMF of a cell. Reason (R): Cell c...

    Text Solution

    |

  6. Assertion (A): At the end of electrolysis using Pt electrodes, an aque...

    Text Solution

    |

  7. Assertion (A): Cu liberates H(2)(g) from a dilute solution of HCl. R...

    Text Solution

    |

  8. Assertion(A): Na^(o+) ions are discharged in preference to H^(o+) ions...

    Text Solution

    |

  9. Assertion (A) : Cu gets readily corroded in acidic aqueous solution. ...

    Text Solution

    |

  10. Assertion (A) : Galvanized iron does not rust. Reason (R): Zn has a...

    Text Solution

    |

  11. Assertion (A): For a Daniell cell : Zn|Zn^(2+)||Cu^(2+)|Cu with E(ce...

    Text Solution

    |

  12. Assertion (A): The electrolysis of NaCl solution gives H(2)(g) at cath...

    Text Solution

    |

  13. Assertion (A) : Fe is protected from corrosing by connecting Mg metal ...

    Text Solution

    |

  14. Assertion (A) : The Daniell cell becomes dead after sometimes. Reaso...

    Text Solution

    |

  15. Assertion (A): wedge^(@).(eq(CH(3)COOH)) cannote be determines experim...

    Text Solution

    |

  16. Assertion (A) : The presence of CO(2) in the air accelerates corrosio...

    Text Solution

    |

  17. Assertion (A) : (H(2)+O(2)) fuel cell gives a constant voltages throug...

    Text Solution

    |

  18. Assertion (A) : In a Daniell cell, if the concentration of Cu^(2+) an...

    Text Solution

    |

  19. Assertion (A) : The ration of specific conductivity to the observed c...

    Text Solution

    |

  20. Assertion(A): The rusting on the surface of iron involves following r...

    Text Solution

    |