Question
Question: Which of the following explain the poling process ?...
Which of the following explain the poling process ?
A
Reduction of metallic oxide impurities to metal by Al
B
Reduction of metallic oxide impurities to metal by gaseous hydrocarbon
C
Electrolytic reduction of metallic oxide to metal
D
Removal of volatile oxides from the molten metal
Answer
Reduction of metallic oxide impurities to metal by gaseous hydrocarbon
Explanation
Solution
In poling process molten impure metal is stirred with green wood. Green wood releases hydrocarbon gases which reduced the impurities.