16The slump test measures concrete's:ACompressive strengthBDurabilityCSetting timeDWorkabilityView AnswerDiscussWorkspaceReportSaveEasy
17Concrete gains most of its design strength by:A28 daysB1 yearC1 dayD7 days fullyView AnswerDiscussWorkspaceReportSaveEasy
18For a concrete mix with 400 kg of cement and a water–cement ratio of 0.45, the water required is:A45 kgB180 kgC400 kgD220 kgView AnswerDiscussWorkspaceReportSaveMedium