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Hassan
1. If the sand in-situ is in its densest state, then the relative density of sand is
A. Zero
B. 1
C. Between 0 and 1
D. Zero
2. The property of a soil which permits water to percolate through it, is called
A. Moisture content
B. Permeability
C. Capillarity
D. Moisture content
3. Toughness index is defined as the ratio of
A. Plasticity index to consistency index
B. Plasticity index to flow index
C. Liquidity index to flow index
D. Plasticity index to consistency index
4. Shear strength of a soil is a unique function of
A. Effective stress only
B. Total stress only
C. Both effective stress and total stress
D. Effective stress only
5.The method of the slices is applicable to
A. Homogenous soils
B. Stratified soils
C. Saturated soils
D. Homogenous soils
6.The angle that Coulomb's failure envelope makes with the horizontal is called
A. Cohesion
B. Angle of internal friction
C. Angle of repose
D. Cohesion
7.A flow net may be utilised for the determination of
A. Exit gradient
B. Seepage
C. Hydrostatic pressure
D. Exit gradient
8.The compression index of a soil
A. Decreases with an increase in the liquid limit
B. Increases with an increase in the liquid limit
C. Decreases with an increase in the plastic limit
D. Decreases with an increase in the liquid limit
9. Sensitivity of a soil can be defined as
A. Percentage of volume change of soil under saturated condition
B. Ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state
C. Ratio of volume of voids to volume of solids
D. Percentage of volume change of soil under saturated condition
10. The soil moisture driven off by heat, is called
A. Free water
B. Hydroscopic water
C. Gravity water
D. Free water
11. Plasticity index is defined as the range of water content between
A. Liquid and plastic limit
B. Plastic limit and semi solid limit
C. Semi-solid limit and liquid limit
D. Liquid and plastic limit
12.Bishop's method of stability analysis
A. Is more conservative
B. Neglects the effect of forces acting on the sides of the slices
C. Assumes the slip surface as an arc of a circle
D. Is more conservative
13. You are given a sample of soil containing coarse grains to determine its water content, you will use
A. Pycnometer
B. Oven-drying method
C. Calcium carbide method
D. Pycnometer
14.During seepage through a soil, direction of seepage is always
A. Parallel to equipotential lines
B. Perpendicular to stream lines
C. Perpendicular to equipotential lines
D. Parallel to equipotential lines
15.The seepage force in a soil, is
A. Perpendicular to the equipotential lines
B. Proportional to the exit gradient
C. Proportional to the head loss
D. Perpendicular to the equipotential lines
16.The polluted water is one which
A. Contains pathogenic bacteria
B. Consists of undesirable substances rendering it unfit for drinking and domestic use
C. Is safe and suitable for drinking and domestic use
D. Contains pathogenic bacteria
17.Orthotolidine test is used for determination of
A. Dissolved oxygen
B. Residual chlorine
C. Biochemical oxygen demand
D. Dissolved oxygen
18.The chemical most commonly used to increase speed of sedimentation of sewage is
A. Sulphuric acid
B. Copper sulphate
C. Lime
D. Sulphuric acid
19. The disinfection efficiency of chlorine increases by
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. Only (i)
20.The layout of distribution system in which water flows towards the outer periphery is
A. Ring system
B. Dead end system
C. Radial system
D. Ring system
21.The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is
A. Reflux valve
B. Sluice valve
C. Air relief valve
D. Reflux valve
22. The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is
A. Separate system
B. Combined system
C. Partially separate system
D. Separate system
23. The main disadvantage of cement concrete sewers is
A. Less strength
B. Difficulty in construction
C. Difficulty in transportation due to heavy weight
D. Less strength
24.Settling velocity increases with
A. Specific gravity of solid particles
B. Size of particles
C. Depth of tank
D. Specific gravity of solid particles
25.. Facultative bacteria are able to work in
A. Presence of oxygen only
B. Absence of oxygen only
C. Presence as well as in absence of oxygen
D. Presence of oxygen only
26.The suitable layout of distribution system for a city with roads of rectangular pattern is
A. Grid iron system
B. Dead end system
C. Ring system
D. Grid iron system
27.The slope of sewer shall be
A. Given in the direction of natural slope of ground
B. Given in the direction opposite to natural slope of ground
C. Zero
D. Given in the direction of natural slope of ground
28. The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by
A. TOD > BOD > COD
B. TOD > COD > BOD
C. BOD > COD > TOD
D. TOD > BOD > COD
29. The working conditions in imhoff tanks are
A. Aerobic only
B. Anaerobic only
C. Aerobic in lower compartment and anaerobic in upper compartment
D. Aerobic only
30. The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called
A. Waste pipe
B. Soil pipe
C. Vent pipe
D. Waste pipe
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