30 real QA/QC & Testing questions from the Site & Project Mgmt bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is Slump test?
Junior
A.IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
B.surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
C.IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³
D.concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent
2. Which term means: "IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected"?
A.Slump test — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
B.Slump test — sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade
C.Slump test — IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
D.Slump test — IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength
A.sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade
B.IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength
C.IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
D.IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³
5. Which term means: "IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength"?
A.Cube compressive test — IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength
B.Cube compressive test — IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
C.Cube compressive test — activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
D.Cube compressive test — surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
A.IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³
B.IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads
C.surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
D.IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
8. Which term means: "IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³"?
A.Sampling frequency — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
B.Sampling frequency — surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
C.Sampling frequency — activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
D.Sampling frequency — IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³
A.formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
B.activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
C.IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
D.surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
11. Which term means: "surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance"?
A.Rebound hammer test — surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
B.Rebound hammer test — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
C.Rebound hammer test — IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
D.Rebound hammer test — IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
A.sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade
B.IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
C.IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
D.activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
14. Which term means: "IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks"?
A.Ultrasonic pulse velocity — IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
B.Ultrasonic pulse velocity — IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
C.Ultrasonic pulse velocity — surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
D.Ultrasonic pulse velocity — IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads
A.IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
B.activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
C.concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent
D.IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
17. Which term means: "concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent"?
A.Core test acceptance — sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade
B.Core test acceptance — concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent
C.Core test acceptance — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
D.Core test acceptance — IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads
A.IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads
B.IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength
C.IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
D.surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
20. Which term means: "IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads"?
A.Aggregate mechanical tests — activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
B.Aggregate mechanical tests — IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads
C.Aggregate mechanical tests — concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent
D.Aggregate mechanical tests — IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³
A.surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
B.IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
C.formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
D.sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade
23. Which term means: "sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade"?
A.Field density test — activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
B.Field density test — sand replacement or core cutter per IS 2720 checks in-situ dry density, with MoRTH requiring 97 percent of Proctor for the top 500 mm of subgrade
C.Field density test — IS 1199 cone 300 mm high filled in three layers of 25 tamps and lifted, with true slump measured and shear or collapse slumps rejected
D.Field density test — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
A.IS 456 requires one sample for 1 to 5 m³, two for 6 to 15, three for 16 to 30, four for 31 to 50 and one more per additional 50 m³
B.IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
C.surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
D.activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
26. Which term means: "activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point"?
A.Inspection and test plan — concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent
B.Inspection and test plan — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
C.Inspection and test plan — IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength
D.Inspection and test plan — activity-wise matrix listing reference specification, test frequency, acceptance criteria, responsibility and whether the client holds, witnesses or reviews each point
A.IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
B.IS 2386 Part 4 impact and crushing values are limited to 30 percent for wearing surfaces and 45 percent elsewhere, with combined flakiness and elongation under 35 percent for roads
C.concrete is accepted when the average of cores is at least 85 percent of the cube strength and no individual core falls below 75 percent
D.formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
29. Which term means: "formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject"?
A.Non-conformance report — IS 516 Part 5 grades concrete above 4.5 km/s as excellent, 3.5 to 4.5 good, 3.0 to 3.5 medium and below 3.0 doubtful, revealing honeycombs and cracks
B.Non-conformance report — surface-hardness index converted to strength through a calibration curve with about 25 percent accuracy, useful for uniformity surveys not acceptance
C.Non-conformance report — IS 516 tests three 150 mm cubes per sample at 28 days under 14 N/mm² per minute, the 7-day result reaching roughly two-thirds of the final strength
D.Non-conformance report — formal record of work deviating from specification with root cause, corrective and preventive action and a disposition of accept-as-is, rework, repair or reject
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