2. Solved Papers
  3. J & K CET Engineering

J & K CET Engineering J and K - CET Engineering Solved Paper-2010

  • question_answer
    The depressant used to separate lead sulphide and zinc sulphide ores is

    A)  potassium cyanide

    B)  sodium cyanide

    C)  silver cyanide

    D)  sodium sulphide

    Correct Answer: B

    Solution :

     Sodium cyanide, NaCN, is used as a depressant to separate lead sulphide (PbS) and zinc sulphide (ZnS) as it depresses the ability of ZnS to form froth while does not affect the ability  of PbS.


You need to login to perform this action.
You will be redirected in 3 sec spinner