1
GATE CE 2024 Set 1
Numerical
+2
-0
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 1
Numerical
+2
-0
Effluent from an industry 'A' has a pH of 4.2. The effluent from another industry 'B'
has double the hydroxyl (OH-)
ion concentration than the effluent from industry 'A'. pH
of effluent from the industry 'B' will be _______.
Your input ____
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Engineering Mechanics
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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