Advertisements
Advertisements
Question
Distinguish between:
Froth floatation - Leaching
Advertisements
Solution
| 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. |
RELATED QUESTIONS
Give the importance of the following for living beings:
Hydrogen
Why are alkali metals kept in kerosene oil?
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Give the effect of heat on their: hydroxide
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
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?
Why is flux used in the blast furnace?
Which metal is used for:
making pipes, buckets, water tanks,
State two properties of brass that render it more useful for some purpose than its components.
Name a metal which forms a liquid alloy at ordinary temperature.
Explain with reason:
Why is powdered coke sprinkled on top of the electrolyte?
The chemical formula of zinc blend is _______.
Match the columns.
| Group A | Group B |
| 1. ZnS | a) Copper Sulphide |
| 2. HgS | b) Bauxite |
| c) Cinnabar | |
| d) Zinc blend |
Explain the hydraulic separation method with a neat labelled diagram.
Complete the following flowchart.
State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.
Zirconium is refined by ____________.
Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at 27°C? (R = 2 cal K-1 mol-1).
Bassemerisation is used in the extraction of ______.
After partial roasting, the sulphide of copper is reduced by ______.
