Refining
Trending Questions
Q.
After extracting the crude metal from its ore, what should be the next logical step?
Refining
Alloying
Pickling
Pulverizing
Q.
Separation of mixture into a thin layer of adsorbent is known as:
Thin layer chromatography
Partition chromatography
Adsorption chromatography
Column Chromatography
Q. Which of the following reduction reactions are actually employed in the commercial extraction of metals?
- Fe2O3+2Al→Al2O3+2Fe
- Cr2O3+2Al→Al2O3+2Cr
- 2Na[Au(CN)2]+Zn→Na2[Zn(CN)4]+2Au
- Cu2O+H2→2Cu+H2O
Q. Why CO2 cant be used as an reducing agent to reduce Al from Al2O3?