General Principles And Processes of Isolation Of Elements

Short Answer Type

Advertisement
Zigya App

How does NaCN act as a depressant in preventive ZnS from forming the froth?

NaCN forms a layer of Zinc complex, Na2Zn(CN)4 on the surface of ZnS and thereby prevents it from the formation of froth.

406 Views
  • Switch
    • Advertisement
    Define Levigation.
    166 Views
    Answer

    One Word Answers

    What name is given to carbon reduction process for extracting the metal?
    169 Views
    Answer

    Which process is used for the concentration of Bauxite (Al2O3.2H2O)?

    254 Views
    Answer

    Which method of metal refining is generally used when a metal of high degree of purity is needed?

    142 Views
    Answer
    Advertisement

    Short Answer Type

    What is the major role of fluorospar (CaF2) which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite?

    142 Views
    Answer

    Sulphide ores usually concentrated by froth flotation process. Why?

    270 Views
    Answer

    Ultra pure silicon is needed by electronic industry. By which method of refining, such a high purity silicon is obtained?

    171 Views
    Answer

    Name the oxide ores of (a) iron  (b)  zinc,  (c) manganese  (d) aluminium.

    130 Views
    Answer
    Advertisement
    <

    Give one example where hydro-metallurgy is used for metal extraction.

    162 Views
    Answer
    Advertisement