The minimum crushing strength of a brick is generally _________
(a) 10 kg/cm^2
(b) 20 kg/cm^2
(c) 30 kg/cm^2
(d) 35 kg/cm^2
I have been asked this question in an online interview.
The origin of the question is Bricks in portion Glass, Lime, Clay Products & Bricks of Construction & Building Materials