Magnesium ribbon is rubbed with sand paper before making it to burn. The reason of rubbing the ribbon is to:
(a)	remove moisture condensed over the surface of ribbon.	(b)	generate heat due to exothermic reaction
(c)	remove magnesium oxide formed over the surface of magnesium.	(d)	mix silicon from sand paper (silicon dioxide) with magnesium for lowering ignition temperature of the ribbon.

Question ID - 55068 | SaraNextGen Top Answer

Magnesium ribbon is rubbed with sand paper before making it to burn. The reason of rubbing the ribbon is to:
(a)	remove moisture condensed over the surface of ribbon.	(b)	generate heat due to exothermic reaction
(c)	remove magnesium oxide formed over the surface of magnesium.	(d)	mix silicon from sand paper (silicon dioxide) with magnesium for lowering ignition temperature of the ribbon.