engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Construction Materials and Management Cement
When cement is tested for fineness by Blaine's air permeability method as described in IS4031-1968, the specific surface of cement shall NOT be less than _____.
1
225 mm2/kg
2
2250 × 102 mm2/kg
3
225 × 104 mm2/kg
4
225 × 108 mm2/kg
5
225 × 106 mm2/kg