Home
Class 12
CHEMISTRY
Which of the following reactions is the ...

Which of the following reactions is the metal displacement reaction? Chosse the right option

A

`Cr_(2)O_(3) + 2Al overset(A) rarr Al_(2)O_(3) + 2Cr`

B

`Fe+2HCl rarr FeCl_2 + H_2 uarr`

C

`2Pb(NO_3)_2 rarr 2PbO + 4NO_2 + O_(2) uarr`

D

`2KClO_3 overset(A)rarr 2KCl + 3O_2`

Text Solution

Verified by Experts

The correct Answer is:
A
Aluminium is more electropositive than Cr, so it displaced chromium from `Cr_(2)O_(3)`
`Cr_(2)O_(3) + Al overset(Delta) rarr Al_3O_3 + Cr.`
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS

    ERRORLESS|Exercise ASSERTION & REASON|8 Videos

  • GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Refining of Crude Metal)|27 Videos

  • ELECTROCHEMISTRY

    ERRORLESS|Exercise Assertion & Reason|11 Videos

  • HELOALKANES AND HALOARENES

    ERRORLESS|Exercise Assertion & Reason|8 Videos

Similar Questions

Explore conceptually related problems

Which of the following redox reaction is a displacement reaction ?

Displacement Reactions

Which of the following stands for a double displacement reaction ?

In which of the following pairs will till displacement reaction occur?

Which of the following pairs will give displacement reactions?

ERRORLESS-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-PAST YEARS QUESTIONS
  1. Which ore of the following is a mineral of iron ?

    Text Solution

    |

  2. Identify the alloy containing a non metal as a constituent in it

    Text Solution

    |

  3. Of the following substances the one which does not contain oxygen is

    Text Solution

    |

  4. Metals are ususally not found as nitates in the ores'' Out of the fol...

    Text Solution

    |

  5. Which of the following is a carbonate ore?

    Text Solution

    |

  6. Which one is malachite from the following

    Text Solution

    |

  7. Sulphide ores of metals are usually concentrated by both floatation pr...

    Text Solution

    |

  8. (Ag +Pb) alloy overset("Melt and add zinc")rarr (Ag +Pb +Zn) "melt" ov...

    Text Solution

    |

  9. In the exteraction of copper from its sulphide ore, the metal is fanal...

    Text Solution

    |

  10. The following reaction take place in the blast in the proparation of i...

    Text Solution

    |

  11. Aluminium is extracted from Alumina (Al(2)O3 ) by electrolysis of a mo...

    Text Solution

    |

  12. Match the items of Column I with item of Column II and assign the corr...

    Text Solution

    |

  13. Extraction of gold and silver involves leaching with CN^(-)ion.silver ...

    Text Solution

    |

  14. Considering Ellingham diagram, which of the following metals can be us...

    Text Solution

    |

  15. Method used for obtaining highly pure silicon used as a semiconductor ...

    Text Solution

    |

  16. Bauxite containing impurities of iron oxide is purified by

    Text Solution

    |

  17. Identify the correct statement from the following

    Text Solution

    |

  18. An organic compound contained 78%(by wt.) carbon and remaining % of hy...

    Text Solution

    |

  19. Which of the following reactions is the metal displacement reaction? C...

    Text Solution

    |

  20. The maximum temperature that can be achieve in blast furnance is:

    Text Solution

    |