railway RRB JE (CBT I + CBT II) Mock Test 2024 Construction Materials and Management Bricks and Mortar

 द्वितीय (2nd) श्रेणी की ईंटों का न्यूनतम संपीडक सामर्थ्य _____होना चाहिए।

1
70 kg/cm2
2
90 kg/cm2
3
100 kg/cm2
4
120 kg/cm2
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