Civil Engineering MCQs
Civil Engineering MCQs are vital for students, graduates, and professionals preparing for government jobs and engineering tests. This category includes questions on structural analysis, concrete technology, geotechnical engineering, construction materials, fluid mechanics, transportation engineering, and surveying. The MCQs are designed in alignment with the syllabus of exams conducted by PPSC, FPSC, NTS, and engineering universities. Each question aims to strengthen your theoretical knowledge and practical understanding. By practicing these MCQs, candidates can boost their confidence and ensure thorough preparation for civil engineering exams and interviews.
Q: The minimum slope for a flat roof to drain rainwater efficiently
A) 1 in 50
B) 1 in 30
C) 1 in 10
D) 1 in 100
✅ Correct Answer: A
Explanation: A slope of 1 in 50 is generally adequate for proper drainage on flat roofs.
Q: Compaction factor test is used to determine
A) Workability
B) Water content
C) Dry density
D) Air content
✅ Correct Answer: A
Explanation: It measures concrete workability, especially for mixes with low slump.
Q: The most durable type of cement for marine structures
A) Low heat cement
B) Rapid hardening cement
C) Ordinary Portland cement
D) Sulphate resisting cement
✅ Correct Answer: D
Explanation: Sulphate resisting cement withstands sulfate attacks in marine environments.
Q: The horizontal distance between two points of a truss is called
A) Rise
B) Span
C) Pitch
D) Length
✅ Correct Answer: B
Explanation: Span is the clear horizontal distance between two supports.
Q: The process of increasing the bearing capacity of soil by mechanical means
A) Compaction
B) Excavation
C) Stabilization
D) Grouting
✅ Correct Answer: A
Explanation: Compaction reduces voids and enhances soil’s load-bearing capacity.
Q: The term “camber” in road construction refers to
A) Pavement strength
B) Thickness of layer
C) Crown slope
D) Load distribution
✅ Correct Answer: C
Explanation: Camber is the slope provided to drain off rainwater from the road surface.
Q: Tensile cracks in concrete generally appear at
A) Corners
B) Along beams
C) Mid-span
D) Supports
✅ Correct Answer: C
Explanation: Flexural tension at mid-span leads to cracking if reinforcement is insufficient.
Q: Under earthquake loads, ductility in structures is essential for
A) Speed
B) Energy dissipation
C) Durability
D) Strength
✅ Correct Answer: B
Explanation: Ductility allows structures to absorb and dissipate seismic energy without sudden failure.
Q: The main cause of efflorescence on brick walls
A) Salt content
B) High temperature
C) Acid rain
D) Dust particles
✅ Correct Answer: A
Explanation: Water-soluble salts migrate to the surface and crystallize, forming efflorescence.
Q: The moisture content in a fully saturated soil sample is called
A) Saturation moisture content
B) Optimum content
C) Natural moisture
D) Liquid limit
✅ Correct Answer: A
Explanation: It is the water content when all voids are filled with water.