Stone
The natural bed of stones can occurs in case of only a) Sedimentary rocks b) Metamorphic rocks c) Igoneous rocks View Answer 3. Crushing strength of a good structural stone should be more than a) 50 N/ mm 2 b) 65 N/ mm 2 c) 100 N/ mm 2 d) 200 N/ mm 2 View Answer 4. The value of crushing strength of limestone is around a) 35 N/ mm 2 b) 44 N/ mm 2