In synthetic sands of aluminium alloys, what is the bentonite percentage composition?
A. 2-5%
B. 3-5%
C. 4-5%
D. 5-6%
Answer:C
In synthetic sands of aluminium alloys, what is the bentonite percentage composition?
A. 2-5% B. 3-5% C. 4-5% D. 5-6%