Q. Thermite process is used in reduction of
A) ${Cr}_{2}O_{3}$
B) ${Al}_{2}O_{3}$
C) ${PbO}_{2}$
D) $CuO$
Explanation
(a)
Thermite process is used for the reduction of oxides of less electropositive metals. Oxides of less electropositive metals such as ${Cr}_{2}O_{3},\ {Mn}_{3}O_{4}$ etc are reduced by using Al. This process is called thermite process.
${Cr}_{2}O_{3} + 2Al\ \longrightarrow {Al}_{2}O_{3} + 2Cr + Heat\$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.