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The metal extracted by leaching with a cyanide is

  • Option 1)

    Mg

  • Option 2)

    Ag

  • Option 3)

    Cu

  • Option 4)

    Na

 

Answers (1)

As we learnt in

Leaching -

In this process we use suitable agent  which react with ore to form water soluble complex while impurities are insoluble 

- wherein

Ag2S +NaCN \overset{O2}{\rightarrow} Na [Ag (CN)2

Na [Ag (CN)2] + Zn{\rightarrow} Na2 [Zn(CN)4] +Ag {\downarrow}

 

 Ag forms a water soluble complex with cyanide while the impurities are insoluble 

Ag2S+4NaCN-2Na (Ag (CN)2)+Na2S


Option 1)

Mg


This option is incorrect 

Option 2)

Ag

This option is correct 

Option 3)

Cu

This option is incorrect 

Option 4)

Na

This option is incorrect 

Posted by

Vakul

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