Quiz: Civil Engineering
Each question carries 1 mark
Negative marking: 1/4 mark
Time: 10 Minutes
Q1. The minimum grade of concrete to be used in reinforced concrete as per IS 456-2000 is
(a) M 30
(b) M 25
(c) M 20
(d) M 15
Q2. The bacteria which can survive without oxygen is called
(a) Anaerobic bacteria
(b) Pathogenic bacteria
(c) Aerobic bacteria
(d) Non-pathogenic bacteria
Q3. Alkaline soils are reclaimed by
(a) Leaching only
(b) Addition of gypsum and leaching
(c) Addition of gypsum only
(d) Provision of drainage
Q4. Diagonal tension in beam…………..
(a) Is maximum at neutral axis
(b) Decreases below the neutral axis and increases above the neutral axis
(c) Increases below the neutral axis and decreases above the neutral axis
(d) Remains the same in both above and below the neutral axis
Q5. A flow net may be utilized for the determination of:
(a) Hydrostatic pressure only
(b) Seepage only
(c) Exit gradient only
(d) All of the above
Q6. Direct method of contouring is-
(a) A quick method
(b) Adopted for large surveys only
(c) Most accurate method
(d) Suitable for hilly terrains
Q7. Rupture stress is
(a) breaking stress
(b) maximum load/original cross-sectional area
(c) maximum stress
(d) load at breaking point/neck area
Q8. Recommended grade of tar for grouting purpose is
(a) RT – 1
(b) RT – 2
(c) RT – 3
(d) RT – 5
Q9. The brick work is measured in square meter, in case of
(a) Honey comb brick work
(b) Brick flat Soling
(c) Half brick walls or the partition
(d) All options are correct
Q10. Specific weight of sea water is more than that of pure water because it contains
(a) dissolved air
(b) Dissolved salt
(c) Suspended matter
(d) all options are correct
Sol. As per IS 456-2000, The minimum grade of concrete used in Reinforced concrete is M20.
Sol. Anaerobic bacteria can survive without oxygen while facultative bacteria can survive with or without oxygen.
Sol. Alkaline soils are reclaimed by addition of gypsum and leaching. Leaching is the process of application of excess irrigation water in order to avoid building up salinity in soil.
Sol. Diagonal tension in beam increase below neutral axis & decrease above neutral axis.
Sol. Application of flow net –
- Seepage discharge
- Seepage pressure
- Hydrostatic pressure
- Exit gradient
Sol. direct method of contouring is the most accurate method. It is suitable for large scale maps when ground surface is regular.
Sol. Rupture stress is the sudden and complete failure of a material under stress.
Sol. RT-1 ⇒ used for surface painting under cold weather.
RT-2 ⇒ Used for surface painting under normal India climate conditions.
RT-3 ⇒ Used for surface painting.
RT-4 ⇒ Used for premixing tar macadam.
RT-5 ⇒ Used for grouting purpose.
Sol. Generally, the brick work is measured in terms of m³. but in case of honey comb brick work, brick flat soling, half brick wall or partition wall then, it is measured in m².
Sol. All options are correct, we all are aware already with this fact that sea water contains dissolved salt, dissolved air and some suspended matters which increase its specific weight as compare to pure water.