The metal oxide which cannot be reduced to metal by carbon
is [NEET Kar. 2013]
(a) Fe₂O₃ (b) Al₂O₃
(c) PbO (d) ZnO
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Answer:
The answer is none other than option c)Pbo
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The metal oxide which cannot be reduced to metal by carbon is aluminum oxide.
Option (b) is the right answer
It's due to the following reasons :
- When oxide is reduced at the high temperature with cabron then it's termed as smelting.
- Oxides of the electropositive metals ( Pb , Fe , Zn ) are heated in a blast furnace either with coke or with coal.
- Carbon reduction will not take place in aluminum oxide because it's very stable.
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