321. Imhoff cone is used to determine_____________________?
A. Settleable solids
B. Suspended solids
C. Dissolved solids
D. None of these
✅ The correct answer is option A.
Civil Engineering
Prepare with the latest Civil Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our question bank covers key topics including surveying, building materials, structural engineering, geotechnical engineering, fluid mechanics, hydraulics, transportation engineering, environmental engineering, and construction management. These Civil Engineering multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, university entry tests, and recruitment assessments. Strengthen your knowledge and problem-solving skills with our updated and comprehensive Civil Engineering MCQs.
322. Dynamic viscosity of most of the gases with rise in temperature___________________?
A. increases
B. decreases
C. remains unaffected
D. unpredictable
✅ The correct answer is option A.
323. The small sewers are cleaned by____________________?
A. Flushing
B. Cane rodding
C. Wooden pills
D. None of these
✅ The correct answer is option A.
324. A well oxidized sewage contains nitrogen mainly as___________________?
A. Nitrates
B. Nitrites
C. Free ammonia
D. None of these
✅ The correct answer is option A.
325. For pipes, laminar flow occurs when Roynolds number is__________________?
A. less than 2000
B. between 2000 and 4000
C. more than 4000
D. less than 4000
✅ The correct answer is option A.
326. Skimming tanks are__________________?
A. Used to remove the grease and oil
B. Those from which sludge is skimmed out
C. Tanks provided with self- cleansing screens
D. Improved version of grit chambers
✅ The correct answer is option A.
327. The first stage of neutral process of sludge digestion, is__________________?
A. Acid fermentation
B. Acid regressio
C. Alkaline fermentation
D. None of these
✅ The correct answer is option A.
328. Surface tension _____________________?
A. acts in the plane of the interface normal to any line in the surface
B. is also known as capillarity
C. is a function of the curvature of the interface
D. decreases with fall in temperature
✅ The correct answer is option A.
329. The detention period for plain sedimentation water tanks, is usually____________________?
A. 4 to 8 hours
B. 8 to 16 hours
C. 16 to 24 hours
D. 24 to 36 hours
✅ The correct answer is option A.
330. The sewerage system originates from__________________?
A. House sewers
B. Lateral sewers
C. Branch sewers
D. Main sewers
✅ The correct answer is option A.