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1
GATE CE 2025 Set 1
MCQ (More than One Correct Answer)
+1
-0
The Surface Overflow Rate (SOR) in a rectangular sedimentation tank is $45 \mathrm{~m}^3 / \mathrm{m}^2 / \mathrm{d}$. Minimum diameters of spherical inorganic and organic particles expected to be completely removed in this tank are calculated. Assume that Stoke's law is applicable. Which of the following options is/are correct: Specific gravity of inorganic particles $=2.65$ Specific gravity of organic particles $=1.20$ Acceleration due to gravity $(\mathrm{g})=9.81 \mathrm{~m} / \mathrm{s}^2$ Kinematic viscosity $(v)=1 \times 10^{-6} \mathrm{~m}^2 / \mathrm{s}$
A
Minimum diameter of inorganic particles is $24 \mu \mathrm{~m}$
B
Minimum diameter of organic particles is $69 \mu \mathrm{~m}$
C
Minimum diameter of inorganic particles is $15 \mu \mathrm{~m}$
D
Minimum diameter of organic particles is $55 \mu \mathrm{~m}$
2
GATE CE 2025 Set 1
MCQ (More than One Correct Answer)
+1
-0
Aeration is employed as a treatment option for the removal of several pollutants from contaminated water. Identify the pollutant(s), where aeration is employed as a part of their removal:
A
Iron
B
Cadmium
C
Manganese
D
Zinc
3
GATE CE 2023 Set 2
MCQ (More than One Correct Answer)
+1
-0
Which of the following is/are NOT active disinfectant(s) in water treatment?
A
OH (hydroxyl radical)
B
O3 (ozone)
C
OCl− (hypochlorite ion)
D
Cl− (chloride ion)
4
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+1
-0.33

A process equipment emits, 5 kg/h of volatile organic compounds (VOCs). If a hood placed over the process equipment captures 95% of the VOCs, then the fugitive emission in kg/h is

A
0.25
B
4.75
C
2.50
D
0.48
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GATE CE Subjects
Construction Material and Management
Critical Path Method Construction Materials Program Evolution Review Technique
Geomatics Engineering Or Surveying
Levelling Traversing Theodolites and Plane Table Surveying Measurement of Area, Volume and Theory of Errors and Survey Adjustment Curves Field Astronomy and Photogrammetric Surveying Basics of GIS, GPS and Remote Sensing Angular Measurements and Compass Survey Basic Concepts Linear Measurements and Chain Survey
Engineering Mechanics
Equilibrium of Force Systems Work Energy Principle and Impulse Momentum Equation
Hydrology
Precipitation and Frequency of Rainfall Data Evaporation and Transpiration Infiltration Hydrograph Flood Estimation and Flood Routing Well Hydraulics and River Gauging
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Pure Bending Shear Stress In Beams Simple Stresses Complex Stress Centroid and Moment of Inertia Torsion Shear Force and Bending Moment Deflection of Beams Thin Cylinder Strain Energy Method Columns and Struts Propped Cantilever Beam
Reinforced Cement Concrete
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Steel Structures
Materials and Specifications Tension Members Riveted Joints and Bolted Joints Welded Connections Eccentric Connections Compression Members Beams Plate Girder
Irrigation
Gravity Dams and Spillways Water Requirement of Crops
Environmental Engineering
Sources and Coveyances Water Quality Control of Water Treatment of Water Water Demand Waste Water Characteristics Sewage System and Sewer Appurtenances Treatment of Sewage Disposal of Sewage Effluent Solid Waste Management Air Pollution Noise Pollution
Engineering Mathematics
Probability and Statistics Differential Equations Transform Theory Calculus Complex Variable Linear Algebra Vector Calculus Numerical Methods
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Origin of Soils Definitions and Properties of Soils Classification of Soils and Clay Mineralogy Effective Stress and Permeability Seepage Analysis Compaction of Soil Compressibility and Consolidation Shear Strength of Soil Stress Distribution of Soil Retaining Wall and Earth Pressure Stability of Slopes Shallow Foundation Pile Foundation Soil Stabilization
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