What is the dry compression strength of core sand mixture for general purpose?
A. 50 kg/cm2
B. 60 kg/cm2
C. 70 kg/cm2
D. 80 kg/cm2
Answer:C
What is the dry compression strength of core sand mixture for general purpose?
A. 50 kg/cm2 B. 60 kg/cm2 C. 70 kg/cm2 D. 80 kg/cm2