1
GATE CE 2024 Set 1
Numerical
+2
-0.833
A water treatment plant treats 25 MLD water with a natural alkalinity of 4.0 mg/L (as CaCO3). It is estimated that, during the coagulation of this water, 450 kg/day of calcium bicarbonate (Ca(HCO3)2) is required based on the alum dosage.
Consider the atomic weights as: Ca-40, H-1, C-12, O-16.
The quantity of pure quick lime, CaO (in kg) required for this process per day is _______ (rounded off to 2 decimal places).
Your input ____
2
GATE CE 2023 Set 2
MCQ (More than One Correct Answer)
+2
-0
In the context of water and wastewater treatments, the correct statements are:
3
GATE CE 2017 Set 2
Numerical
+2
-0
The analysis of a water sample produces the following results:
The total hardness (in mg/L as $${\mathrm{CaCO}}_3$$) of the water sample is ______.
The total hardness (in mg/L as $${\mathrm{CaCO}}_3$$) of the water sample is ______.Your input ____
4
GATE CE 2016 Set 2
MCQ (Single Correct Answer)
+2
-0.6
A sample of water has been analyzed for common ions and results are presented in the form
of a bar diagram as shown.
The non-carbonate hardness (expressed in mg/L as $${\mathrm{CaCO}}_3$$) of the sample is
The non-carbonate hardness (expressed in mg/L as $${\mathrm{CaCO}}_3$$) of the sample isQuestions Asked from Quality Control of Water (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE CE Subjects
Engineering Mechanics
Strength of Materials Or Solid Mechanics
Structural Analysis
Construction Material and Management
Reinforced Cement Concrete
Steel Structures
Geotechnical Engineering
Fluid Mechanics and Hydraulic Machines
Hydrology
Geomatics Engineering Or Surveying
Levelling Traversing Theodolites and Plane Table Surveying Measurement of Area, Volume and Theory of Errors and Survey Adjustment Field Astronomy and Photogrammetric Surveying Basics of GIS, GPS and Remote Sensing Angular Measurements and Compass Survey Basic Concepts Linear Measurements and Chain Survey
Environmental Engineering
Transportation Engineering
Engineering Mathematics
General Aptitude