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
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.
What do you observe when hydrogen is passed over heated copper oxide?
`Ag2O`
................................
`MnO_2 + 4Al` 
…………….
`Cu (OH)2`
................................
`2AgNO_3`
...........................
`2Cu_2O +Cu_2S`
......................
How is it removed?
Which metal is used for:
making face creams
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.
What is magnalium? Name the main elements present in it? Write its one use ?
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.
What do you observe when hydrogen is passed over heated copper oxide?
Explain the froth floatation method with a neat labelled diagram.
Chemical formula of rust is ______
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).
After partial roasting, the sulphide of copper is reduced by ______.
