The displacement reaction between iron (oxide and a metal X is used for welding the rail tracks. Here X is____________
A. Copper granules
B. Magnesium ribbon
C. Sodium pellets
D. Aluminium dust
Answer:D
The displacement reaction between iron (oxide and a metal X is used for welding the rail tracks. Here X is____________
A. Copper granules B. Magnesium ribbon C. Sodium pellets D. Aluminium dust