1.

What is the green compression strength of core sand mixture for general purpose?

A. 1/5 kg/cm<sup>2</sup>
B. 1/6 kg/cm<sup>2</sup>
C. 1/7 kg/cm<sup>2</sup>
D. 1/8 kg/cm<sup>2</sup>
Answer» D. 1/8 kg/cm<sup>2</sup>


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