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 more reactive metal.
Identify A and B and give their reactions with dil HCL and dil H2SO4 ?
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 ?
oxides
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
A student has been collecting silver coins and copper coins. One day she observed a black
coating on silver coins and a green coating on copper coins. Which chemical phenomenon is
responsible for these coatings? Write the names of black and green coatings.
Define the term ‘metallurgy’. State the processes involved in metallurgy ?
Name:
(a) the processes involved in
concentration :-
Explain the following terms:
(c) slag
On which factors does the purification of metals depend?
With a labelled diagram, explain the electro-refining of a particular metal.
`Cu (OH)2`
................................
`2AgNO_3`
...........................
Why is flux used in the blast furnace?
what does it form with silica present in the ore?
Arrange the metals in (2) in the decreasing order of reactivity.
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite.
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?
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
