NEXT
1
GATE CE 2025 Set 1
MCQ (Single Correct Answer)
+1
-0.33

Fecal Coliform (FC) concentration in river water was measured as 10780 cfu/100 ml. The FC concentration after the conventional water treatment, but before chlorination, was measured as $23 \mathrm{cfu} / 100 \mathrm{ml}$. The 'Log Kill' (inactivation) of FC due to the conventional water treatment is closest to

A
4.00
B
2.50
C
2.67
D
3.00
2
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 $55 \mu \mathrm{~m}$
3
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
4
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)
NEXT

GATE CE Subjects

Browse all chapters by subject

Structural Analysis
Matrix Method Methods of Analysis Energy Principle Arches and Cable Truss Stability and Static Indeterminacy Moment Distribution Method Indeterminacy Influence Line Diagram Plastic Analysis Slope Deflection Method
Fluid Mechanics and Hydraulic Machines
Drag and Lift Boundary Layer Theory Fluid Dynamics Flow Through Pipes Dimensional Analysis Open Channel Flow Fluid Pressure and Measurement Hydraulic Machines Hydrostatic Forces Properties of Fluids Fluid Statics
Strength of Materials Or Solid Mechanics
Simple Stresses Pure Bending Centroid and Moment of Inertia Shear Stress In Beams Complex Stress Strain Energy Method Thin Cylinder Deflection of Beams Columns and Struts Shear Force and Bending Moment Torsion Propped Cantilever Beam
Reinforced Cement Concrete
Doubly Reinforced Sections Bond Prestressed Concrete Limit State of Collapse Shear Limit State of Collapse Torsion Limit State of Collapse Compression Limit State of Serviceability Flanged Beams Workmenship and Fundamentals Singly Reinforced Sections Footings Slabs
Construction Material and Management
Program Evolution Review Technique Critical Path Method Construction Materials
Geotechnical Engineering
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
General Aptitude
Numerical Ability Logical Reasoning Verbal Ability
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
Steel Structures
Materials and Specifications Riveted Joints and Bolted Joints Compression Members Beams Plate Girder Welded Connections Tension Members Eccentric Connections
Hydrology
Precipitation and Frequency of Rainfall Data Evaporation and Transpiration Infiltration Hydrograph Flood Estimation and Flood Routing Well Hydraulics and River Gauging
Transportation Engineering
Highway Devolopment and Planning Highway Geometric Design Traffic Engineering Highway Materials Pavement Design Railway, Runway and Taxiway Design
Engineering Mathematics
Vector Calculus Numerical Methods Differential Equations Linear Algebra Complex Variable Probability and Statistics Transform Theory Calculus
Irrigation
Gravity Dams and Spillways Water Requirement of Crops
Engineering Mechanics
Equilibrium of Force Systems Work Energy Principle and Impulse Momentum Equation
Geomatics Engineering Or Surveying
Levelling Theodolites and Plane Table Surveying Curves Field Astronomy and Photogrammetric Surveying Traversing Measurement of Area, Volume and Theory of Errors and Survey Adjustment Basics of GIS, GPS and Remote Sensing Basic Concepts Linear Measurements and Chain Survey Angular Measurements and Compass Survey
EXAM MAP

Browse past year questions by exam & subject

Joint Entrance Examination
JEE Main JEE Advanced MHT CET BITSAT COMEDK WB JEE KCET VITEEE AP EAPCET TS EAMCET IAT (IISER)
Medical
NEET AIIMS MHT CET (Biology)
Graduate Aptitude Test in Engineering
GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN GATE Data Science and Artificial Intelligence
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12