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Environmental Engineering
Sources and Coveyances Water
Marks 1Marks 2
Quality Control of Water
Marks 1Marks 2
Treatment of Water
Marks 1Marks 2
Water Demand
Marks 1Marks 2
Waste Water Characteristics
Marks 1Marks 2
Sewage System and Sewer Appurtenances
Marks 1
Treatment of Sewage
Marks 2
Disposal of Sewage Effluent
Marks 1Marks 2
Solid Waste Management
Marks 1Marks 2
Air Pollution
Marks 1Marks 2
Noise Pollution
Marks 1
1
GATE CE 2024 Set 2
Numerical
+2
-0

A circular settling tank is to be designed for primary treatment of sewage at a flow rate of 10 million liters/day. Assume a detention period of 2.0 hours and surface loading rate of 40000 liters/m2/day. The height (in meters) of the water column in the tank is ______________ (rounded off to 2 decimal places).

Your input ____
2
GATE CE 2024 Set 2
Numerical
+2
-0

An organic waste is represented as C240O200H180N5S5.

(Atomic weights: S-32, H-1, C-12, O-16, N-14).

Assume complete conversion of S to SO2 while burning.

SO2 generated (in grams) per kg of this waste is __________ (rounded off to 1 decimal place).

Your input ____
3
GATE CE 2024 Set 1
MCQ (Single Correct Answer)
+2
-0.833

For assessing the compliance with the emissions standards of incineration plants, a correction needs to be applied to the measured concentrations of air pollutants. The emission standard (based on 11% Oxygen) for HCl is 50 mg/Nm3 and the measured concentrations of HCl and Oxygen in flue gas are 42 mg/Nm3 and 13%, respectively.

Assuming 21% Oxygen in air, the CORRECT statement is:

A

No compliance, as the corrected HCl emission is greater than the emission standard.

B

Compliance is there, as the corrected HCl emission is less than the emission standard.

C

Compliance is there, as there is no need to apply the correction since Oxygen is greater than 11% and HCl emission is lesser than the emission standard.

D

No compliance, as the Oxygen is greater than 11% in the flue gas.

4
GATE CE 2014 Set 1
Fill in the Blanks
+2
-0
A straight 100 m long raw water gravity main is to carry water from an intake structure to the jack well of a water treatment plant. The required flow through this water main is 0.21 $$m^3/s$$. Allowable velocity through the main is 0.75 m/s. Assume f = 0.01, g = 9.81 $$m/s^2$$. The minimum gradient (in cm/100m length) to be given to this gravity main so that the required amount of water flows without any difficulty is _____.
Questions Asked from Marks 2
GATE CE 2024 Set 2 (2) GATE CE 2024 Set 1 (1) GATE CE 2014 Set 1 (1)
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
Irrigation
Geomatics Engineering Or Surveying
Environmental Engineering
Transportation Engineering
Engineering Mathematics
General Aptitude