Civil Engineering - Online Test
Q1. Match the items in Group – I with those in Group – II and choose the right combination.
Group - I Group - II
P. Activated sludge process 1. Nitrifiers and denitrifiers
Q. Rising of sludge 2. Autotrophic bacteria
R. Conventional nitrification 3. Heterotrophic bacteria
S. Biological nitrogen removal 4. Denitrifiers
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. The two vectors [1,1,1] and [1, a, a2], where a = 
, are
, are
Answer : Option B
Explaination / Solution:
Dot product of two vectors = 1 + a + a2 = 0
So orthogonal
Q3. The minimum number of satellites needed for a GPS to determine its position precisely is
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. A strip footing is resting on the ground surface of a pure clay bed having an undrained
cohesion Cu. The ultimate bearing capacity of the footing is equal to
Answer : Option D
Explaination / Solution:
Ultimate bearing capacity = c.Nc
For pure clay Nc = 5.14 = (π + 2)
UBC = (π + 2)C
Q5. The radius of a horizontal circular curve on a highway is 120 m. The design speed is 60
km/hour, and the design coefficient of lateral friction between the tyre and the road surface is
0.15. The estimated value of superelevation required (if full lateral friction is assumed to
develop), and the value of coefficient of friction needed (if no superelevation is provided)
will, respectively, be
Answer : Option C
Explaination / Solution:
Q6. The compound which is largely responsible for initial setting and early strength gain of
Ordinary Portland Cement is
Answer : Option B
Explaination / Solution:
No Explaination.
Q7. During a forensic investigation of pavement failure, an engineer reconstructed the
graphs P, Q, R and S, using partial and damaged old reports.
Theoretically plausible correct graphs according to the 'Marshall mixture design output'
are
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The system that uses the Sun as a source of electromagnetic energy and records the
naturally radiated and reflected energy from the object is called
Answer : Option C
Explaination / Solution:
No Explaination.
Q9. Seepage is occurring through a porous media shown in the figure. The hydraulic
conductivity values (k1, k2, k3) are in m/day.
The seepage discharge (m3 /day per m) through the porous media at section PQ is
Answer : Option B
Explaination / Solution:
Flow is normal to bedding flame
Q10. SO2 and CO adversely affect
Answer : Option C
Explaination / Solution:
Carbon monoxide effects the bloods carrying capacity
