8215Chemical EngineeringMedium
High purity nitrogen is used in________?
AMaking protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
BFire fighting purposes
CNeither A. nor (B)
DBoth A. & B.
Correct answer
D. Both A. & B.
Explanation
The correct answer is Both A. & B..