Concrete Contractor Licensing
Examination (AGACNP-C) 2026–2027 |
Comprehensive Question Practice Test
with Answers & Rationales| Free Pdf
Access
1. What is the primary function of cement in a concrete mixture?
A. Increase colour
B. Bind the aggregate together
C. Reduce water absorption
D. Improve insulation
Correct Answer: B
Rationale: Cement acts as the binding agent that holds sand and aggregate together after
hydration.
2. Which ingredient makes up the largest volume of normal concrete?
A. Aggregate
B. Cement
C. Water
D. Admixture
,Correct Answer: A
Rationale: Aggregates account for most of the concrete's volume and contribute to its
strength and stability.
3. What is the purpose of reinforcing steel (rebar) in concrete?
A. Increase compressive strength
B. Improve tensile strength
C. Reduce curing time
D. Improve colour
Correct Answer: B
Rationale: Rebar provides tensile strength, helping concrete resist cracking under tension.
4. Which test measures the consistency and workability of fresh concrete?
A. Slump test
B. Compression test
C. Density test
D. Permeability test
Correct Answer: A
Rationale: The slump test evaluates the workability and consistency of freshly mixed
concrete.
5. Which tool is commonly used to level freshly placed concrete?
A. Screed
B. Chisel
,C. Circular saw
D. Pipe wrench
Correct Answer: A
Rationale: A screed removes excess concrete and creates a level surface.
6. What is the primary purpose of curing concrete?
A. Increase moisture loss
B. Promote proper strength development
C. Reduce cement content
D. Change colour
Correct Answer: B
Rationale: Proper curing maintains moisture and temperature for cement hydration and
strength gain.
7. Which admixture is commonly used to speed up concrete setting in cold
weather?
A. Accelerator
B. Retarder
C. Air entrainer
D. Plasticizer
Correct Answer: A
Rationale: Accelerators shorten the setting time and improve early strength development.
8. Which tool is used to compact freshly placed concrete?
, A. Concrete vibrator
B. Trowel
C. Mason's square
D. Hammer
Correct Answer: A
Rationale: Vibrators eliminate trapped air and improve concrete density.
9. Which component provides compressive strength to concrete?
A. Cement paste and aggregate
B. Water only
C. Air only
D. Reinforcing steel only
Correct Answer: A
Rationale: The cement paste binds the aggregates, creating a strong composite material.
10. Which weather condition increases the risk of rapid concrete drying?
A. Hot, windy weather
B. Cool, humid weather
C. Overcast skies
D. Light drizzle
Correct Answer: A
Rationale: Heat and wind accelerate evaporation, increasing the risk of cracking.
Examination (AGACNP-C) 2026–2027 |
Comprehensive Question Practice Test
with Answers & Rationales| Free Pdf
Access
1. What is the primary function of cement in a concrete mixture?
A. Increase colour
B. Bind the aggregate together
C. Reduce water absorption
D. Improve insulation
Correct Answer: B
Rationale: Cement acts as the binding agent that holds sand and aggregate together after
hydration.
2. Which ingredient makes up the largest volume of normal concrete?
A. Aggregate
B. Cement
C. Water
D. Admixture
,Correct Answer: A
Rationale: Aggregates account for most of the concrete's volume and contribute to its
strength and stability.
3. What is the purpose of reinforcing steel (rebar) in concrete?
A. Increase compressive strength
B. Improve tensile strength
C. Reduce curing time
D. Improve colour
Correct Answer: B
Rationale: Rebar provides tensile strength, helping concrete resist cracking under tension.
4. Which test measures the consistency and workability of fresh concrete?
A. Slump test
B. Compression test
C. Density test
D. Permeability test
Correct Answer: A
Rationale: The slump test evaluates the workability and consistency of freshly mixed
concrete.
5. Which tool is commonly used to level freshly placed concrete?
A. Screed
B. Chisel
,C. Circular saw
D. Pipe wrench
Correct Answer: A
Rationale: A screed removes excess concrete and creates a level surface.
6. What is the primary purpose of curing concrete?
A. Increase moisture loss
B. Promote proper strength development
C. Reduce cement content
D. Change colour
Correct Answer: B
Rationale: Proper curing maintains moisture and temperature for cement hydration and
strength gain.
7. Which admixture is commonly used to speed up concrete setting in cold
weather?
A. Accelerator
B. Retarder
C. Air entrainer
D. Plasticizer
Correct Answer: A
Rationale: Accelerators shorten the setting time and improve early strength development.
8. Which tool is used to compact freshly placed concrete?
, A. Concrete vibrator
B. Trowel
C. Mason's square
D. Hammer
Correct Answer: A
Rationale: Vibrators eliminate trapped air and improve concrete density.
9. Which component provides compressive strength to concrete?
A. Cement paste and aggregate
B. Water only
C. Air only
D. Reinforcing steel only
Correct Answer: A
Rationale: The cement paste binds the aggregates, creating a strong composite material.
10. Which weather condition increases the risk of rapid concrete drying?
A. Hot, windy weather
B. Cool, humid weather
C. Overcast skies
D. Light drizzle
Correct Answer: A
Rationale: Heat and wind accelerate evaporation, increasing the risk of cracking.
