Civil Engineering
Q. What is the significance of the water-cement ratio in concrete?
-
A.
It affects the color of the concrete
-
B.
It influences the workability and strength
-
C.
It determines the curing time
-
D.
It impacts the cost of materials
Solution
The water-cement ratio is critical as it directly influences the workability, strength, and durability of the concrete.
Correct Answer: B — It influences the workability and strength
Q. Which admixture is commonly used to accelerate the setting time of concrete?
-
A.
Retarding admixture
-
B.
Water-reducing admixture
-
C.
Accelerating admixture
-
D.
Air-entraining admixture
Solution
Accelerating admixtures are used to speed up the setting time of concrete, especially in cold weather conditions.
Correct Answer: C — Accelerating admixture
Q. Which property of aggregates is crucial for ensuring good concrete performance?
-
A.
Color
-
B.
Shape and texture
-
C.
Weight
-
D.
Cost
Solution
The shape and texture of aggregates are crucial for ensuring good concrete performance, affecting bonding and workability.
Correct Answer: B — Shape and texture
Q. Which property of bricks is most important for load-bearing applications?
-
A.
Color
-
B.
Water absorption
-
C.
Compressive strength
-
D.
Size uniformity
Solution
Compressive strength is the most important property of bricks for load-bearing applications, ensuring they can support structural loads.
Correct Answer: C — Compressive strength
Q. Which property of bricks is primarily tested for quality assurance?
-
A.
Color uniformity
-
B.
Compressive strength
-
C.
Thermal conductivity
-
D.
Water absorption
Solution
Compressive strength is a primary property tested for bricks to ensure they can withstand structural loads.
Correct Answer: B — Compressive strength
Q. Which property of bricks is tested to ensure their suitability for construction?
-
A.
Color uniformity
-
B.
Water absorption
-
C.
Thermal conductivity
-
D.
Weight
Solution
Water absorption is tested in bricks to ensure they are suitable for construction, as high absorption can lead to durability issues.
Correct Answer: B — Water absorption
Q. Which property of steel is most important for its use in reinforced concrete?
-
A.
Corrosion resistance
-
B.
Ductility
-
C.
Thermal conductivity
-
D.
Color
Solution
Ductility is the most important property of steel in reinforced concrete, allowing it to deform under stress without failing.
Correct Answer: B — Ductility
Q. Which test is commonly used to determine the fineness of cement?
-
A.
Blaine air permeability test
-
B.
Vicat needle test
-
C.
Le Chatelier test
-
D.
Slump test
Solution
The Blaine air permeability test measures the fineness of cement by determining the surface area of the particles.
Correct Answer: A — Blaine air permeability test
Q. Which test is commonly used to determine the workability of concrete?
-
A.
Slump test
-
B.
Compression test
-
C.
Tensile test
-
D.
Flexural test
Solution
The slump test is commonly used to determine the workability of concrete by measuring the consistency of the mix.
Correct Answer: A — Slump test
Q. Which test is performed to determine the compressive strength of concrete?
-
A.
Flexural test
-
B.
Slump test
-
C.
Cube test
-
D.
Tensile test
Solution
The cube test is commonly performed to determine the compressive strength of concrete by measuring the load at which a concrete cube fails.
Correct Answer: C — Cube test
Q. Which test is used to determine the compressive strength of concrete?
-
A.
Flexural test
-
B.
Tensile test
-
C.
Cube test
-
D.
Impact test
Solution
The cube test is a standard method for determining the compressive strength of concrete by testing concrete cubes.
Correct Answer: C — Cube test
Q. Which test is used to determine the moisture content of aggregates?
-
A.
Sieve analysis
-
B.
Specific gravity test
-
C.
Moisture content test
-
D.
Compaction test
Solution
The moisture content test is used to determine the moisture content of aggregates, which is crucial for mix design.
Correct Answer: C — Moisture content test
Q. Which test is used to determine the soundness of cement?
-
A.
Vicat test
-
B.
Le Chatelier test
-
C.
Blaine air permeability test
-
D.
Water absorption test
Solution
The Le Chatelier test is used to determine the soundness of cement, ensuring it does not expand excessively after setting.
Correct Answer: B — Le Chatelier test
Q. Which test is used to determine the water absorption of aggregates?
-
A.
Specific gravity test
-
B.
Los Angeles abrasion test
-
C.
Water absorption test
-
D.
Sieve analysis
Solution
The water absorption test measures the porosity of aggregates, which affects the water-cement ratio in concrete.
Correct Answer: C — Water absorption test
Q. Which test is used to measure the compressive strength of concrete?
-
A.
Slump test
-
B.
Cube test
-
C.
Flexural test
-
D.
Tensile test
Solution
The cube test is commonly used to measure the compressive strength of concrete by testing concrete cubes under pressure.
Correct Answer: B — Cube test
Q. Which test is used to measure the water absorption of aggregates?
-
A.
Los Angeles abrasion test
-
B.
Specific gravity test
-
C.
Water absorption test
-
D.
Sieve analysis
Solution
The water absorption test measures the porosity of aggregates, which is crucial for understanding their performance in concrete.
Correct Answer: C — Water absorption test
Q. Which type of aggregate is preferred for high-strength concrete?
-
A.
Coarse aggregate
-
B.
Fine aggregate
-
C.
Recycled aggregate
-
D.
Lightweight aggregate
Solution
Coarse aggregates are preferred for high-strength concrete as they provide better load-bearing capacity and structural integrity.
Correct Answer: A — Coarse aggregate
Q. Which type of brick is known for its high compressive strength and low water absorption?
-
A.
Clay brick
-
B.
Concrete brick
-
C.
Fly ash brick
-
D.
Sand-lime brick
Solution
Sand-lime bricks are known for their high compressive strength and low water absorption, making them suitable for various construction applications.
Correct Answer: D — Sand-lime brick
Q. Which type of cement is commonly used for high-strength concrete?
-
A.
Ordinary Portland Cement
-
B.
Rapid Hardening Cement
-
C.
Sulphate Resisting Cement
-
D.
White Cement
Solution
Ordinary Portland Cement is commonly used for high-strength concrete due to its good compressive strength characteristics.
Correct Answer: B — Rapid Hardening Cement
Showing 31 to 49 of 49 (2 Pages)
