Home
Class 12
CHEMISTRY
Gold is extracted by making soluble cyan...

Gold is extracted by making soluble cyanide complex. The cyanide complex is

A

`[Au(CN)_4]^(-)`

B

`[Au(CN)_2]^(-)`

C

`[Au(CN)_3]^(-)`

D

`[Au(CN)]^(-)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NTA NEET TEST 79

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

  • NTA NEET TEST 81

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

Similar Questions

Explore conceptually related problems

Allyl cyanide has

The metal extracted by leaching with cyanide is

The water-soluble complex is

Statement-1:In cyanide process for the extraction of gold and silver from their natives, ores, the cuanide solution acts as a reducing agent to reduce the gold and siver compound present in the ores into the metallic states. Statement-2:In the extraction of gold and silver, the cyanide solution acts as complexing ragent in the presence of air and form their respective soluble complexes.

Alkyl cyanides can be obtained by

Cyanide affects which complex of ETC?

NTA MOCK TESTS-NTA NEET TEST 80-CHEMISTRY
  1. Pick out the incorrect statement for XeF4

    Text Solution

    |

  2. Study the following table Which two compounds have least mass of ...

    Text Solution

    |

  3. Gold is extracted by making soluble cyanide complex. The cyanide compl...

    Text Solution

    |

  4. In Cr - atom the number of 3d - electron having spin quantum number , ...

    Text Solution

    |

  5. The products of the reaction of HCHO and PhCHO in presence of concentr...

    Text Solution

    |

  6. Identify (Z) in the following sequence of reactions. CH3CH2COClover...

    Text Solution

    |

  7. One mole of water is converted to vapour at its boiling point 100^@C a...

    Text Solution

    |

  8. Select the correct statement

    Text Solution

    |

  9. How much time is required for complete decomposition of 4 moles of wat...

    Text Solution

    |

  10. The pH at the equivalence point of a titration may differ from 7.0 bec...

    Text Solution

    |

  11. What type of polymer is represented by following segment ? -overset(...

    Text Solution

    |

  12. D-glucose & D-fructose can be differentiated by :

    Text Solution

    |

  13. Chemicals that are responsible for communication of message between ne...

    Text Solution

    |

  14. The properties of carbonyl group is suppressed the most in

    Text Solution

    |

  15. The reaction of ethyl p - amiobenzoate with HNO2 and then with HBF4 yi...

    Text Solution

    |

  16. One molee of methanol when burnt in O(2), gives out 723 kJ mol^(-1) of...

    Text Solution

    |

  17. Colour of I2 solution is discharged , when solution of 'X' is added . ...

    Text Solution

    |

  18. Which of the following compounds will recact with ethanolic KCN?

    Text Solution

    |

  19. In the aluminothermite process, aluminium is

    Text Solution

    |

  20. A mixture of 100 mL of oxygen and 500 mL of hydrogen is reacted to for...

    Text Solution

    |