_The minimum compressive strength of 2nd class bricks should be$?

1.	_The minimum compressive strength of 2nd class bricks should be$?
A.	75 kg/cm¬¨‚â§
B.	90 kg/cm¬¨‚â§
C.	100 kg/cm¬¨‚â§
D.	120 kg/cm¬¨‚â§
Answer» B. 90 kg/cm¬¨‚â§

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