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GATE 2022 Toppers Weekly Quiz 4
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Question 1Multiple Correct Options
ASP is used to treat a waste water flow of 2MLD having BOD5 of 250 mg/lit. The biomass concentration in the aeration tank is 2500 mg/lit and the concentration of biomass leaving the system is 80 mg/lit, the aeration tank has a volume of 200m3.
Question 2
The rainfall during three successive 2 hour periods are 0.5, 2.8 and 1.6 cm. The surface runoff resulting from this storm is 3.2 cm. The 
index value of this storm is
Question 3
A clayey soil has a field capacity of 0.38 m3 per m3and wilting point of 0.24 m3 per m3. If specific weight of soil is 12.75 kNm-3 and the effective root zone depth is 0.8 m, then the available moisture holding capacity is _________ cm.
Question 4
A clay layer has a thickness H. It takes 1 year to undergo 50% consolidation of this layer. A cohesionless soil underlain as well as overlain this clay layer. What is the value of H? Assume coefficient of consolidation = 12.614 m2/year.
Question 5
A vertical load of 10 kN acts on a hinge located at a distance of 
from the roller support Q of a beam of length 
(see figure).
The vertical reaction at support Q is
from the roller support Q of a beam of length (see figure). The vertical reaction at support Q is
Question 6
The sleeper density for a broad gauge track if 19 sleepers are used under a rail length. Given that length of a rail for B.G. track is 12.8 metres.
Question 7
The speed-density relationship for a particular road was found to be : u = 42.76 – 0.22 k, Where u is the speed in km and k is the density in vehicles per km. capacity of the road will be-
Question 8
If 
represent the total horizontal stress, total vertical stress, effective horizontal stress and effective vertical stress on a soil element, respectively, the coefficient of earth pressure at rest is given by
Question 9
A water treatment plant is required to process 28800 m3/d or raw water (density = 1000 kg/m3, kinematic viscosity = 10–6 m2/s). The rapid mixing tank imparts a velocity gradient of 900 s–1 to blend 35 mg/I of alum with the flow for a detention time of 2 minutes. The power input (W) required for rapid mixing is
Question 10Multiple Correct Options
Which of the air pollutants are primary pollutants
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ESE & GATE CEGeneralJul 20ESE & GATE CE
