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प्रश्न
Answer the following question :
Name the process used for the enrichment of sulphide ore.
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उत्तर
Froth flotation process is used for the enrichment of sulphide ore.
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संबंधित प्रश्न
Complete the following by selecting the correct option from the choices given:
The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ____________. (Fe/Mg/Pb/Al)
How is the following metallic oxide reduced? Write the equation:
Zinc oxide
Give equation for the following conversion: Aluminium to aluminium nitride.
what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?
Name a non-metallic element which forms acidic and neutral oxides
What is the type of bonding expected in a metallic chloride?
- A to F below relate to the source and extraction of either zinc or aluminium:
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
- Write down the three letters each from the above list which are relevant to
- Zinc
- Aluminium
- Fill in the blanks using the most appropriate words from A to F.
- The ore from which aluminium is extracted must first be treated with ………………. so that pure aluminium oxide can be obtained.
- Pure aluminium oxide is dissolved in ….. to make a conducting solution.
iii. Write the formula of cryolite.
Name two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.
Give the equations for the reduction of copper oxide.
Give the equation for the reduction of Iron (III) oxide.
