CERTIFICATION PRACTICE EXAMINATION NEWEST (2025
- 2026 UPDATE) FROM REAL PAST PAPERS QUESTIONS –
SET 100 MOST COMMON EXAM FREQUENTLY TESTED
QUESTIONS AND ANSWERS IN DETAILS 100% VERIFIED
EXAM HIGHLY RECOMMENDABLE FOR GRADE A+
1. A contractor proposes a change in asphalt mix design during production
due to aggregate variability. What is the inspector’s first action
A. Approve the change if plant tests look acceptable
B. Reject the change immediately
C. Verify that the revised mix design has been submitted and approved per
specifications
D. Allow temporary use until formal approval
✔ Correct Answer: C (Verify that the revised mix design has been submitted and
approved per specifications)
Explanation: Specification compliance requires formal approval before
implementation to ensure performance and contractual integrity.
2. During subgrade inspection, proof rolling reveals localized pumping. What is
the most appropriate action
A. Ignore if compaction tests pass
B. Require removal and replacement or stabilization of the affected area
C. Add more base material on top
D. Reduce roller passes
✔ Correct Answer: B (Require removal and replacement or stabilization of the
affected area)
Explanation: Pumping indicates instability that must be corrected to prevent
structural failure.
, 3. A nuclear density gauge shows inconsistent readings. What should the
inspector do first
A. Recalibrate the gauge
B. Compare with another gauge or perform standard count check
C. Average the readings
D. Ignore outliers
✔ Correct Answer: B (Compare with another gauge or perform standard count
check)
Explanation: Verification ensures the instrument is functioning correctly before
recalibration or conclusions.
4. Concrete slump exceeds specification limits. What is the correct action
A. Add cement
B. Reject the load or require corrective action per specs
C. Add water on site
D. Accept if strength is expected to be adequate
✔ Correct Answer: B (Reject the load or require corrective action per specs)
Explanation: Slump outside limits affects workability and strength; specs must be
enforced.
5. Which document governs inspection procedures and acceptance criteria
A. Contractor schedule
B. Project specifications
C. Equipment manual
D. Material invoices
✔ Correct Answer: B (Project specifications)
Explanation: Specifications define requirements for materials, methods, and
acceptance.
6. Asphalt temperature at placement is below minimum. What is the likely
consequence
A. Improved compaction
B. Reduced density and premature failure
, C. Increased strength
D. No effect
✔ Correct Answer: B (Reduced density and premature failure)
Explanation: Low temperatures hinder compaction, leading to weak pavement.
7. When should a field density test be performed
A. Before compaction
B. After compaction is complete
C. During excavation
D. Only at project end
✔ Correct Answer: B (After compaction is complete)
Explanation: Density tests verify achieved compaction after rolling.
8. A discrepancy exists between plans and field conditions. What should be
done
A. Proceed with plans
B. Notify engineer and request clarification
C. Follow contractor preference
D. Stop work permanently
✔ Correct Answer: B (Notify engineer and request clarification)
Explanation: Engineering authority must resolve inconsistencies.
9. What is the purpose of a control strip in asphalt paving
A. Determine roller speed
B. Establish rolling pattern and compaction method
C. Reduce material cost
D. Improve appearance
✔ Correct Answer: B (Establish rolling pattern and compaction method)
Explanation: Control strips define compaction procedures to achieve required
density.
10.Improper curing of concrete leads to
A. Increased durability