Specified compressive strengh of concrete is obtained from cube tests at the end of:
Options are :
- 3 days
- 14 days
- 21 days
- 28 days
- 7 days
Answer :28 days
Hydraulics MCQ Practice Questions (Civil Engineering) Set 1
For compacting plain concrete road surface of thickness less than 20 cm, we use:
Options are :
- None of these
- Internal vibrator
- Screed vibrator
- Form vibrator
Answer :Screed vibrator
The
internal dimensions of a ware house are 15 m x 5.6 m, and the maximum
height of piles is 2.70 m, the maximum number of bags to be stored in
two piles, are:
Options are :
- 3000 bags
- 2500 bags
- 2000 bags
- 1500 bags
- 4000 bags
Answer :3000 bags
The compaction of concrete, improves:
Options are :
- Durability
- Strength
- All the above
- Density
Answer :All the above
Elements of Remote Sensing MCQ Practice Questions (Civil) Set 3
Batching error means inaccuracy in the quantity of:
Options are :
- All the above
- Cement
- Water
- Aggregates
Answer :All the above
The produce impermeable concrete:
Options are :
- Properly graded and non-porous aggregates are requied
- All the above
- Thorough mixing of concrete is required
- Proper compaction of concrete is required
- Proper curing of concrete is required
Answer :All the above
The grade of concrete not recommended by I.S. : 456, is:
Options are :
- M 400
- M 100
- M 500
- M 300
- M 200
Answer :M 500
Theory of Structures MCQ Practice Questions (Civil Eng) Set 2
Too wet concrete may cause:
Options are :
- All the above
- Lower density
- Weakness of concrete
- Excessive laitance
- Segregation
Answer :All the above
A construction joint is provided where:
Options are :
- The member is supported by other member
- Bending moment is small
- Shear force is small
- All the above
Answer :All the above
Pick up the correct statement from the following:
Options are :
- Construction joints are provided to control shrinkage cracks
- Construction joints are necessarily planned for their locations
- Expansion joints need not be provided in foundation concrete
- All the above
- Expansion joints are provided to accommodate thermal expansion
Answer :All the above
Hydraulics MCQ Practice Questions (Civil Engineering) Set 10
Pick up the correct statement from the following:
Options are :
- Alumina in excess, reduces the strength of the cement
- Lime in excess, causes the cement to expand and disintegrate
- Magnesium oxide in excess, remains in free state and makes the cement unsound
- All the above
- Silica in excess, causes the cement to set slowly
Answer :All the above
Pick up the incorrect statement from the following:
Options are :
- None of these
- The degree of grinding of cement, is called fineness
- The heat generated during chemical reaction of cement with water, is known as heat of hydration
- The process of changing cement paste into hard mass, is known as setting of cement
- The phenomenon by virtue of which cement does not allow transmission of sound, is known as soundness of cement
Answer :The phenomenon by virtue of which cement does not allow transmission of sound, is known as soundness of cement
Separation of coarse aggregates from mortar during transportation, is known:
Options are :
- None of these
- Creeping
- Segregation
- Bleeding
- Shrinkage
Answer :Shrinkage
Irrigation MCQ Practice Questions (Civil Engineering) Set 3
Pick up the correct statement from the following:
Options are :
- The volume of fully saturated sand, is equal to the volume of dry and loose sand
- Bulking of sand is caused due to formation of a thin film of surface moisture
- All the above
- Fine sand bulks more than coarse sand
- With 10% moisture content by weight, the bulking of sand is increased by 50%
Answer :All the above
Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is:
Options are :
Answer :30%
According to the recommendations of IS : 456-1978, the expansion joints:
Options are :
- Are provided to ensure minimum resistance
- Are supported on separate columns
- Are provided where plane changes abruptly
- All the above
- Do not carry reinforcement across them
Answer :All the above
Elements of Remote Sensing MCQ Practice Questions (Civil) Set 3
Proper batching ensures:
Options are :
- Workability
- Durability
- Economy
- Strength
- All the above
Answer :All the above
Workability of concrete for a given water content is good if the aggregates, are:
Options are :
- Rounded aggregate
- Flaky aggregates
- Angular aggregate
- Irregular aggregate
Answer :Rounded aggregate
Grading of sand causes great variation in:
Options are :
- All the above
- Workability of concrete
- Handing and placing of concrete
- Strength of concrete
- Durability of concrete
Answer :All the above
Elements of Remote Sensing MCQ Practice Questions (Civil) Set 2
The final operation of finishing floors, is known as:
Options are :
- Finishing
- Floating
- All the above
- Screeding
- Trowelling
Answer :Trowelling
For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:
Options are :
- 105 litres of sand and 140 litres of aggregates
- None of these
- 70 kg of sand and 140 litres of aggregates
- 105 litres of sand and 210 litres of aggregates
- 70 litres of sand and 120 litres of aggregates
Answer :105 litres of sand and 210 litres of aggregates
Addition of pozzolana to cement causes:
Options are :
- Increase in curing time
- Reduction in bleeding
- All the above
- Reduction in permeability
- Loss of heat of hydration
Answer :All the above
Hydraulics MCQ Practice Questions (Civil Engineering) Set 3
For construction of structures in sea water, the cement generally preferred to, is:
Options are :
- Portland-pozzolana cement
- None of these
- Rapid hardening cement
- Low heat Portland cement
- Quick setting cement
Answer :Portland-pozzolana cement
Pick up the correct statement from the following:
Options are :
- All the above
- Higher workability indicates deficiency of sand
- Concrete mix having zero slump, is unsuitable for high strength
- If the concrete mix is dry, the slump is zero
- Higher workability indicates unexpected increase in the moisture content
Answer :All the above
Pick up the correct statement from the following:
Options are :
- All the above
- Water cement paste hardens due to hydration
- During hardening cement binds the aggregates together
- Cement provides strength, durability and water tightness to the concrete
Answer :All the above
Construction Management MCQ Practice Questions (Civil Eng) Set 1
An aggregate is said to be flaky, if its least dimension is less than:
Options are :
- 3/5 mean dimension
- 5/8 mean dimension
- 2/3 mean dimension
- None of these
- 3/4 mean dimension
Answer :3/5 mean dimension
You are asked to construct a massive dam, the type of cement you will use, is:
Options are :
- Blast furnace slag cement
- Low heat cement
- Rapid hardening cement
- Ordinary Portland cement
- White cement
Answer :Low heat cement
Addition of pozzolana to ordinary port land cement, causes:
Options are :
- Reduction bleeding
- Decrease in early strength
- Reduction in chemical action with sulphates
- All the above
- Increase in shrinkage
Answer :All the above
Concrete Technology MCQ Practice Questions (Civil Eng) Set 2
Addition of pozzolana to cement:
Options are :
- Decreases curing time
- Increases strength
- Decreases workability
- None of these
- Increases heat of hydration
Answer :None of these
Pick up the incorrect statement from the following:
Options are :
- The mould is in the form of a frustum of hexagonal pyramid
- The bottom and top ends of slump mould are parallel to each other
- None of these
- The internal surface of the mould is kept clean and free from set cement
- The axis of the mould is perpendicular to the end faces
Answer :The mould is in the form of a frustum of hexagonal pyramid
