question_answer

  What is the role of pine oil in froth floatation process?                                                                                                   [1]

Answer:

  Pine oil helps in the formation of the froth of the sulphide and brings at the surface. Other particles, of no use and which are to be rejected (as sand etc.) are not wetted by pine oil. Thus, sulphide ore is concentrated by froth-floatation process using pine-oil.      [1]