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Leeching process can be used for concent...

Leeching process can be used for concentration of ores of

A

aluminium

B

Copper

C

gold

D

iron

Text Solution

Verified by Experts

The correct Answer is:
A, C
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One of the processes used for concentration of ores is Froth floatation process. This process is generally used for concentration of sulphide ores. Sometimes in this process we add NaCN as a depressant. NaCN is generally added in case of ZnS and PbS minerals. what is the purpose of addition of NaCN during the process of Froth floatation?

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Knowledge Check

  • Froth floatation process is used for the concentration of the ore of :

    A
    Fe
    B
    Al
    C
    Cr
    D
    Cu

  • Froth floatation process is used for the concentration of the ore of :

    A
    Fe
    B
    Al
    C
    Cr
    D
    Cu

  • One of the processes used for concentration of ores is Froth floatation process. This process is generally used for concentration of sulphide ores. Sometimes in this process we add NaCN as a depressant. NaCN is generally added in case of ZnS and PbS minerals. what is the purpose of addition of NaCN during the process of Froth floatation?

    A
    NaCN causes reduction by precipitation
    B
    A soluble complex is formed by reactio between NaCN and ZnS while PbS forms froth
    C
    A soluble complex is formed by reaction between NaCN and PbS while ZnS forms froth
    D
    A precipitate of `Pb(CN)_(2)` is produced while ZnS remain unaffected.