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

द्वितीय श्रेणी की ईंट का संपीडन सामर्थ्य  है

1
10.5 N/mm2
2
12 N/mm2
3
7.0 N/mm2
4
4.0 N/mm2
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