Aluminium metal is frequently used as a reducing agent for the extraction of metals like Cr,Mn,Fe etc. Explain.

Hydrogen is used as a reducing agent in the extraction of

Explain the following : (a) Aluminium vessel can be used to store conc HNO_(3) . (b) AlCl_(3) forms a dimer, but BCl_(3) does not. ( c) Al metal is frequency used as a reducing agent for the extraction of metal such as Cr , etc. (d) Al cannot be prepared by the electrolysis of aqueous solution of its salt. ( e) The B-X distance is shorter than what is expected theoretically in BX_(3) molecule (X = F, Cl, Br, I) . (f) Althrough the ionisation potential of B(8.30 eV) is less than gold (9.22 eV) , yet B is a non-metal while gold is a metal.

Which product of coal is used as a reducing agent in the extraction of metals?

Aluminium is used as a reducing agent in the reduction of :

________ is used as a reducing agent in the extraction of B and Si.