Q. Among the following groups of oxides, the group containing oxides that cannot be reduced by carbon to give the respective metals is

A) $Cu_{2}O,\ K_{2}O$
B) $PbO,\ Fe_{3}O_{4}$
C) $Fe_{2}O_{3},\ ZnO$
D) $CaO,\ K_{2}O$
Explanation

(d)
$CaO,\ K_{2}O$ cannot reduced by carbon reduction method

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.