Advertisements
Advertisements
प्रश्न
Distinguish between:
Froth floatation - Leaching
Advertisements
उत्तर
| Froth floatation | Leaching | |
| 1. | The froth floatation method is based on the two opposite properties, hydrophilic and hydrophobic, of the gangue and ore particles respectively. | Leaching method is based on the dissolution of ore particles in a certain solution. |
| 2. | There is no chemical reaction involved. | There is a specific chemical reaction between ore and the solution used for leaching. |
| 3. | This method involves the formation of froth from oil, water, and air bubbles together, due to the agitation. | There is no formation of froth. |
| 4. | This method is used for concentration of zinc blende and copper pyrite. | This method is used for the concentration of bauxite. |
APPEARS IN
संबंधित प्रश्न
Name:
(a) the processes involved in
concentration :-
What do you observe when hydrogen is passed over heated copper oxide?
With a labelled diagram, explain the electro-refining of a particular metal.
Give the ionization reactions of electrolyte used in Hall’s process. write the reaction at the cathode and the anode. Why the anode has to be replaced in this process?
state the reactions at the two electrodes ?
Arrange the metals in (2) in the decreasing order of reactivity.
Explain the term of Metallurgy .
Complete the following flow chart and answer the questions below:

i) In which method pine oil is used?
ii) Explain what method of concentration in brief.
The following is a sketch of an electrolytic cell used in the extraction of aluminium :
(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?
Write scientific reason.
Magnetic separation method is used to separate the magnetic ingredients in the ores.
Write the molecular formulae of the following compound.
Stannic oxide
Complete flow chart given below.

Explain the hydraulic separation method with a neat labelled diagram.
Identify the following method of concentration of ores and explain briefly.

Observe the figure and name and explain in brief the following method:

Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Which of following metals occurs in native state?
Explain the following term:
Metallurgy
After partial roasting, the sulphide of copper is reduced by ______.
