Advertisements
Advertisements
प्रश्न
Explain concept with example/explain with the help of a balanced equation.
Gangue
Advertisements
उत्तर
- The unwanted impurities of sand, soil, rocky substances, etc., present in the ore are called gangue.
- Ores are taken out from the mines and the gangue is usually separated from the ore at the site itself by various methods.
- The process of separating gangue from the ores is called the concentration of ores.
- For example, bauxite ore contains impurities of silica (SiO2), ferric oxide (Fe2O3) and titanium oxide (TiO2). These impurities are called gangue.
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.
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
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
Explain the following term:
Gangue
On which factors does the purification of metals depend?
`Cu (OH)2`
................................
`2NaNO_3`
......................
`2Cu_2O +Cu_2S`
......................
Where are the cathode and anode in the electrolytic cell? Name the material used for these?
what does it form with silica present in the ore?
Name a metal which forms a liquid alloy at ordinary temperature.
A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Write the molecular formulae of the following compound.
Copper pyrite
Write the molecular formulae of the following compound.
Ferrous tungstate
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 ____________.
