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Multiple choice question for engineering

Set 1

1. For walls, columns and vertical faces of all structural members, the form work is generally removed after
a) 24 to 48 hours
b) 3 days
c) 7 days
d) 14 days

View Answer

Answer: a [Reason:] For rapid hardening cement, 3/7 of the above period will be sufficient in all cases except vertical sides of slabs, beams and columns which should be retained for 24 hours.

2. The basic requirement for the success of any quality control plan is the availability of experienced, knowledgeable and trained personnel at all the levels. True or False.
a) True
b) False

View Answer

Answer: a [Reason:] It is the very basic requirement for the success of any quality control plan is the availability of experienced, knowledgeable and trained personnel at all the levels.

3. Quality control helps to ____________ the risks of overdesign that ___________ the overall cost.
a) Maximize, Increase
b) Minimize, Increase
c) Maximize, Decrease
d) Minimize, Decrease

View Answer

Answer: d [Reason:] Quality control helps to minimize the risks of overdesign that reduces the overall cost.

4. ___________ cost of maintenance of the structure __________ construction due to quality works.
a) Maximize, after
b) Minimize, after
c) Maximize, before
d) Minimize, before

View Answer

Answer: b [Reason:] Minimize cost of repair and maintenance of the structure after construction due to quality works.

5. It __________ job-site concrete handling, and testing procedures to __________ potential liability to the company.
a) Improve, Increase
b) Improve, Decrease
c) Ruin, Decrease
d) Ruin, Increase

View Answer

Answer: b [Reason:] It improve job-site concrete handling, curing, sampling and testing procedures to reduce potential liability to the company.

6. ___________ quality construction ___________ the wastage of materials.
a) Good, reduce
b) Bad, reduce
c) Good, increase
d) Bad, Decrease

View Answer

Answer: a [Reason:] Good quality construction reduces the wastage of materials, smooth function of the team and keeps the construction cost within the limit.

7. Quality management system improves perception of customers towards company. True or false
a) True
b) False

View Answer

Answer: a [Reason:] Quality management system improves perception of customers towards company due to credible quality personnel and quality practices.

8. It opens the area of improvement for quality construction rationally based on the documents from ___________ projects.
a) Previous
b) Next
c) Later
d) Future

View Answer

Answer: a [Reason:] It opens the area of improvement for quality construction rationally based on the documents from previous projects.

9. The property of a material that resists penetration or indentation by means of abrasion or scratching is known as ____________
a) Strength
b) Hardness
c) Stiffness
d) Toughness

View Answer

Answer: b [Reason:] The property of a material that resists penetration or indentation by means of abrasion or scratching is known as hardness.

10. During compression test of cast iron, the failure occurs i.e. the crack appears along the __________
a) Diagonal
b) Surface parallel to load applied
c) Surface perpendicular to load applied
d) Lateral

View Answer

Answer: a [Reason:] The failure occurs i.e. the crack appears along the diagonal during compression test of cast iron.

Set 2

1. What is the content of SiO2 in fly ash?
a) 30-60%
b) 15-30%
c) Up to 30%
d) 1-7%

View Answer

Answer: a [Reason:] The content of SiO2 in fly ash has been tested according to procedures specified in IS: 1727-1967.

2. What is the content of Al2O3 in fly ash?
a) 30-60%
b) 15-30%
c) Up to 30%
d) 1-7%

View Answer

Answer: b [Reason:] The content of Al2O3 in fly ash has been tested according to procedures specified in IS: 1727-1967.

3. What is the content of unburnt fuel in fly ash?
a) 30-60%
b) 15-30%
c) Up to 30%
d) 1-7%

View Answer

Answer: c [Reason:] The content of unburnt fuel in fly ash has been tested according to procedures specified in IS: 1727-1967.

4. Air entrainment in concrete increases ___________
a) Strength
b) Workability
c) The effect of temp variations
d) The unit weight

View Answer

Answer: b [Reason:] There are following types of Air entrainment in concrete which helps to increase the workability.

5. Find the odd one out.
a) Clay and shales
b) Opalinccherts
c) Diatomaceous earth
d) Surkhi

View Answer

Answer: d [Reason:] Clay and shales, opalinccherts, diatomaceous earth are natural pozzolnanas and surkhi is artificial one.

6. Find the odd one out.
a) Fly ash
b) Silica Fume
c) Rice husk ash
d) Volcanic tuffs

View Answer

Answer: d [Reason:] Fly ash, silica fume, rice husk ash are artificial pozzolnanas and Volcanic tuffs is the natural one.

7. Find the odd one out.
a) Finely divided minerals
b) Air entraining agents
c) Synthetic derivatives
d) Natural derivatives

View Answer

Answer: d [Reason:] Finely divided minerals, Air entraining agents, Synthetic derivatives are the types of plasticizers.

8. Find the odd one out.
a) Water reducing plasticizers
b) Water reducing plasticizers
c) High performance plasticizers
d) Super plasticizers

View Answer

Answer: d [Reason:] Water reducing plasticizers, Water reducing plasticizers, High performance plasticizers are the types of plasticizers available in India.

9. Which one is not chemical admixtures?
a) Accelerators
b) Retarders
c) Water-reducing agents
d) Silica fume

View Answer

Answer: d [Reason:] Accelerators, retarders, water reducing agents are the chemical admixtures and silica fumes is mineral admixtures.

10. Which one is not the part of chemical and mineral admixtures?
a) Curing compounds
b) GGBFS
c) Metakaoline
d) Pumicites

View Answer

Answer: a [Reason:] GGBFS and Metakaoline are mineral admixtures and Pumicites is the artificial admixtures.

Set 3

1. Which cement is used in sewage and water treatment plants?
a) Rapid Hardening Cement
b) Low Heat Cement
c) Sulphate Resisting Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] Cement with composition has very good resistance to sulphate attack. This type of cement is used in the construction of foundation in soil where subsoil contains very high proportions of sulphate.

2. Which cement is used for mainly building construction where strength required with age?
a) Rapid Hardening Cement
b) Low Heat Cement
c) Portland Pozzolana Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] It gains very high compressive strength with age unlike other cement and it is very cheap and affordable.

3. Which cement is used for artificial marble?
a) Rapid Hardening Cement
b) Sulphate Resisting Cement
c) Coloured Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] As the name suggests, it is used where coloured cement required for any aesthetic purposes.

4. Which cement is used to create bond with old concrete surface?
a) Rapid Hardening Cement
b) Expansive Cement
c) Sulphate Resisting Cement
d) Low Heat Cement

View Answer

Answer: b [Reason:] As the name suggests, it expands and increases in volume while settled. It is used to avoid shrinkage of concrete.

5. Which cement is used to stored for longer duration in wet climatic conditions?
a) Expansive Cement
b) Ordinary Portland Cement
c) Hydrophobic Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] This type of cement is manufactured by mixing admixtures like petrolatum, napthalene soap which forms layer and act as water repellent.

6. Which cement used in frost resistance concrete?
a) OPC
b) PPC
c) AEC
d) QSC

View Answer

Answer: c [Reason:] It is used to fill up the gap in concrete which are produced by excessive amount of water during casting (later evaporated and leave the gap).

7. Which cement is used for the construction of water-retaining structure like tanks, reservoirs, retaining walls, swimming pools, dams, bridges, piers etc?
a) Waterproof Portland Cement
b) Colored Cement
c) High Alumina Cement
d) Low Heat Cement

View Answer

Answer: a [Reason:] This cement is prepared by mixing with OPC or rapid hardening cement with a small percentage of some metal stearates at the time of mixing.

8. ____ cement is used for formwork that can be removed earlier and reused in other areas which save the cost of formwork.
a) Rapid Hardening Cement
b) Colored Cement
c) High Alumina Cement
d) Low Heat Cement

View Answer

Answer: a [Reason:] Rapid hardening cement is used where the formwork can be removed earlier and reused in other areas which save the cost of formwork. This cement can be used in prefabricated concrete construction, road works, etc.

9. Which cement is mainly used for interior and exterior decorative works?
a) Rapid Hardening Cement
b) Colored Cement
c) High Alumina Cement
d) Low Heat Cement

View Answer

Answer: b [Reason:] This Cement is produced by adding 5- 10% mineral pigments with Portland cement during the time of grinding. Due to the various color combinations this cement is mainly used for interior and exterior decorative works.

10. Which cement is used for works economic where considerations is predominant?
Reservoirs, retaining walls, swimming pools, dams, bridges, piers etc.?
a) Waterproof Portland Cement
b) Colored Cement
c) High Alumina Cement
d) Blast Furnace Slag Cement

View Answer

Answer: d [Reason:] It is obtained by grinding the clinkers with about 60% slag and resembles more or less in properties of Portland cement.

Set 4

1. Which cement is used in sewage and water treatment plants?
a) Rapid Hardening Cement
b) Low Heat Cement
c) Sulphate Resisting Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] Cement with composition has very good resistance to sulphate attack. This type of cement is used in the construction of foundation in soil where subsoil contains very high proportions of sulphate .

2. Which cement is used for mainly building construction where strength required with age?
a) Rapid Hardening Cement
b) Low Heat Cement
c) Portland Pozzolana Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] It gains very high compressive strength with age unlike other cement and it is very cheap and affordable.

3. Which cement is used for artificial marble?
a) Rapid Hardening Cement
b) Sulphate Resisting Cement
c) Coloured Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] As the name suggests, it is used where coloured cement required for any aesthetic purposes.

4. Which cement is used to create bond with old concrete surface?
a) Rapid Hardening Cement
b) Expansive Cement
c) Sulphate Resisting Cement
d) Low Heat Cement

View Answer

Answer: b [Reason:] As the name suggests, it expands and increases in volume while settled. It is used to avoid shrinkage of concrete.

5. Which cement is used to stored for longer duration in wet climatic conditions?
a) Expansive Cement
b) Ordinary Portland Cement
c) Hydrophobic Cement
d) Quick Setting Cement

View Answer

Answer: c [Reason:] This type of cement is manufactured by mixing admixtures like petrolatum, napthalene soap which forms layer and act as water repellent.

6. Which cement used in frost resistance concrete?
a) OPC
b) PPC
c) AEC
d) QSC

View Answer

Answer: c [Reason:] It is used to fill up the gap in concrete which are produced by excessive amount of water during casting (later evaporated and leave the gap).

7. Which cement is used for the construction of water-retaining structure like tanks, reservoirs, retaining walls, swimming pools, dams, bridges, piers etc?
a) Waterproof Portland Cement
b) Colored Cement
c) High Alumina Cement
d) Low Heat Cement

View Answer

Answer: a [Reason:] This cement is prepared by mixing with OPC or rapid hardening cement with a small percentage of some metal stearates at the time of mixing.

8. ____ cement is used for formwork that can be removed earlier and reused in other areas which save the cost of formwork.
a) Rapid Hardening Cement
b) Colored Cement
c) High Alumina Cement
d) Low Heat Cement

View Answer

Answer: a [Reason:] Rapid hardening cement is used where the formwork can be removed earlier and reused in other areas which save the cost of formwork. This cement can be used in prefabricated concrete construction, road works, etc.

9. Which cement is mainly used for interior and exterior decorative works?
a) Rapid Hardening Cement
b) Colored Cement
c) High Alumina Cement
d) Low Heat Cement

View Answer

Answer: b [Reason:] This Cement is produced by adding 5- 10% mineral pigments with Portland cement during the time of grinding. Due to the various color combinations this cement is mainly used for interior and exterior decorative works.

10. Which cement is used for works economic where considerations is predominant?
Reservoirs, retaining walls, swimming pools, dams, bridges, piers etc.?
a) Waterproof Portland Cement
b) Colored Cement
c) High Alumina Cement
d) Blast Furnace Slag Cement

View Answer

Answer: d [Reason:] It is obtained by grinding the clinkers with about 60% slag and resembles more or less in properties of Portland cement.

Set 5

1. What do you mean by workability?
a) ASTM C 125 defines workability as the property determining the effort required to manipulate a freshly mixed quantity of concrete with maximum loss of homogeneity
b) ASTM C 125 defines workability as the property determining the effort required to manipulate a freshly mixed quantity of concrete with minimum loss of heterogeneity
c) The strict definition of workability is the amount of useful external work, against the external friction between the individual particles in the concrete, necessary to produce full compaction
d) The workability is also defined as the ease with which a freshly mixed concrete can be properly compacted and also that it can be transported, placed, and finished

View Answer

Answer: d [Reason:] The workability is defined as the ease with which a freshly mixed concrete can be properly compacted and also that it can be transported, placed, and finished.

2. Workability of concrete can be improved by addition
a) Iron
b) Sodium
c) Zinc
d) Sulphur

View Answer

Answer: c [Reason:] Inorganic retardants include oxides of lead, zinc, phosphate and magnesium salts. Most retarders also act as water reducers.

3. Workability of concrete can be improved by
a) More sand
b) More cement
c) More fine aggregates
d) Fineness of coarse aggregate

View Answer

Answer: b [Reason:] Workability of concrete can be improved by more cement and water with proper water cement ratio.

4. Workability of concrete can be improved by ___________
a) Increasing size of aggregates
b) Decreasing size of aggregates
c) Increasing fine aggregates
d) Increasing flaky aggregates

View Answer

Answer: a [Reason:] Workability should be obtained by the use of a well-graded aggregate which has the largest maximum particle size possible.

5. Workability of concrete is directly proportional to
a) Grading of the aggregates
b) Time of transit
c) Aggregates cement ratio
d) Water cement ratio

View Answer

Answer: a [Reason:] Grading of aggregate: Poor grading reduces the consistency. That’s why it is directly proportional to grading of the aggregates.

6. Workability of concrete is inversely proportional to
a) Grading of the aggregates
b) Time of transit
c) Aggregates cement ratio
d) Water cement ratio

View Answer

Answer: d [Reason:] Workability of concrete is inversely proportional to Water cement ratio because if the amount of w/c ratio increases, workability decreases.

7. If compaction factor of concrete is .90, then workability is ____________
a) Low
b) Very low
c) Medium
d) High

View Answer

Answer: c [Reason:] At the less workable end of this group, manually compacted flat slabs using crushed aggregates. Normal reinforced concrete manually compacted and heavily reinforced sections with vibration.

8. A compaction factor of .85 for a cement concrete sample indicates ___________
a) Low workability
b) Medium workability
c) Good workability
d) Very good workability

View Answer

Answer: a [Reason:] Roads vibrated by hand-operated machines. At the more workable end of this group, concrete may be manually compacted in roads using aggregate of rounded or irregular shape.

9. Adding water increases __________
a) Workability
b) Strength
c) Fame
d) Quality

View Answer

Answer: a [Reason:] Adding of water increases workability because it is inversely proportional to the workability.

10. Why Shape and texture of aggregates is must?
a) Smooth surfaces give better workability
b) Smooth surfaces give poor workability
c) Rough surfaces give better workability
d) Rough surfaces give poor workability

View Answer

Answer: a [Reason:] The use of smooth and rounded, rather than irregularly shaped aggregate also increase workability.