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
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.
Give the effect of heat on their: nitrates
Define the term ‘metallurgy’. State the processes involved in metallurgy ?
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
`MnO_2 + 4Al`
…………….
`ZnCO_3`
..............................
`2NaNO_3`
......................
`HgS + O_2`
..................
Why is flux used in the blast furnace?
Which metal is used for:
lithographic plates for printing
What is magnalium? Name the main elements present in it? Write its one use ?
Match the columns.
| Group A | Group B |
| 1. ZnS | a) Copper Sulphide |
| 2. HgS | b) Bauxite |
| c) Cinnabar | |
| d) Zinc blend |
Cassiterite is a copper ore.
Explain the froth floatation method with a neat labelled diagram.
Zirconium is refined by ____________.
Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
After partial roasting, the sulphide of copper is reduced by ______.
