Advertisements
Advertisements
प्रश्न
Complete the following flowchart.
Advertisements
उत्तर
| Separation method of metals | |||
| Wilfley table method | Hydraulic separation method | Magnetic separation method | Froth floatation method |
APPEARS IN
संबंधित प्रश्न
brown powder deposit on iron?
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 a more reactive metal.
Give the effect of heat on their: carbonates
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.
Explain the following term:
Gangue
Explain the following terms:
smelting
On which factors does the purification of metals depend?
Name the methods used for purification?
`Cu (OH)2`
................................
`2AgNO_3`
...........................
`2Cu_2O +Cu_2S`
......................
state the reactions at the two electrodes ?
State two properties of brass that render it more useful for some purpose than its components.
Explain with reason:
Why is powdered coke sprinkled on top of the electrolyte?
In Wilfley table method to separate particles of gangue _______ method is used.
Write the molecular formulae of the following compound.
Stannic oxide
Limestone is used as a flux in the extraction of ______.
Which of following metals occurs in native state?
After partial roasting, the sulphide of copper is reduced by ______.
