Magnesium ribbon is rubbed before burning because it has a coating of
A. basic magnesium carbonate
B. basic magnesium oxide
C. basic magnesium sulphide
D. basic magnesium chloride
Answer:A
Magnesium ribbon is rubbed before burning because it has a coating of
A. basic magnesium carbonate B. basic magnesium oxide C. basic magnesium sulphide D. basic magnesium chloride