MCQOPTIONS
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MCQOPTIONS
This section includes 51 Mcqs, each offering curated multiple-choice questions to sharpen your Highway Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The sum of flakiness index and elongation index should not exceed __________ |
| A. | 15 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» D. 40 | |
| 2. |
The flakiness index for surface dressing should not exceed __________ |
| A. | 15% |
| B. | 25% |
| C. | 35% |
| D. | 45% |
| Answer» C. 35% | |
| 3. |
The crushing value of the aggregate determines its __________ |
| A. | Hardness |
| B. | Strength |
| C. | Toughness |
| D. | Durability |
| Answer» C. Toughness | |
| 4. |
The specific gravity for aggregates should be within the range of __________ |
| A. | 2.5-2.8 |
| B. | 2.6-2.9 |
| C. | 2.4-2.6 |
| D. | 2.2-2.6 |
| Answer» C. 2.4-2.6 | |
| 5. |
The skid number for highways should not be less than __________ |
| A. | 55 |
| B. | 45 |
| C. | 35 |
| D. | 25 |
| Answer» B. 45 | |
| 6. |
If the aggregates are exceptionally strong then they are having impact value which is? |
| A. | Less than 10 |
| B. | Less than 15 |
| C. | Less than 30 |
| D. | Greater than 30 |
| Answer» B. Less than 15 | |
| 7. |
The capability of aggregate to resist more weathering action and wheel load is called __________ |
| A. | Hardness |
| B. | Toughness |
| C. | Durability |
| D. | Angularity |
| Answer» D. Angularity | |
| 8. |
Impact value is used to measure? |
| A. | Hardness |
| B. | Toughness |
| C. | Wheel load |
| D. | Strength |
| Answer» C. Wheel load | |
| 9. |
Soft aggregates are used in __________ |
| A. | Lower layers |
| B. | Upper layers |
| C. | Everywhere in the pavement |
| D. | Depends on the material |
| Answer» B. Upper layers | |
| 10. |
Sand obtained from river is used as __________ |
| A. | Course aggregate |
| B. | Fine aggregate |
| C. | Filling materials |
| D. | Substitute |
| Answer» C. Filling materials | |
| 11. |
Stone aggregate do not have to resist __________ |
| A. | Weathering effect |
| B. | Traffic load |
| C. | Wheel load stress |
| D. | Soil load |
| Answer» E. | |
| 12. |
If the shear strength of the non-cohesive soil is 84KN/m2 and angle of friction is 30 degrees, then the normal strength in KN/m2 is? |
| A. | 140 |
| B. | 141 |
| C. | 143 |
| D. | 145 |
| Answer» E. | |
| 13. |
The plate bearing test is used to evaluate __________ |
| A. | Modulus of sub grade reaction |
| B. | Modulus of sub base reaction |
| C. | Modulus of base reaction |
| D. | Modulus of pavement |
| Answer» B. Modulus of sub base reaction | |
| 14. |
If the load value at 2.5mm penetration in CBR is 190kg and the load for 5.0mm penetration is 48kg, then the CBR value at 5 mm penetration is? |
| A. | 4.6 |
| B. | 4.4 |
| C. | 4.3 |
| D. | 4.1 |
| Answer» C. 4.3 | |
| 15. |
An aggregate is said to be flaky if its least dimension is less than _____. |
| A. | 2/3 mean dimension |
| B. | 3/4 mean dimension |
| C. | 3/5 mean dimension |
| D. | 5/8 mean dimension |
| Answer» D. 5/8 mean dimension | |
| 16. |
Consider the following related to sand in mortars:1. It increases the volume of the mortar mix.2. It increase the strength of masonry.3. The cost of the mortars is reduced.4. Shrinkage of the mortar is almost prevented.5. Surkhi can replace sand in cement mortar used in plastering and this modified mortar is more durable.Which of the above are relevant to ‘sand’ in mortar? |
| A. | 1, 2, 4 and 5 |
| B. | 1, 3 and 4 only |
| C. | 3, 4 and 5 only |
| D. | 2, 3 and 4 only |
| Answer» C. 3, 4 and 5 only | |
| 17. |
If aggregate size of 40-50 mm is to be tested for determining the proportion of elongated aggregates, the slot length of the gauge should be: |
| A. | 45 mm |
| B. | 53 mm |
| C. | 90 mm |
| D. | 81 mm |
| Answer» E. | |
| 18. |
_______ is used in concrete too provide economy in the cost of material. It is used as filler only and do not react with cement and water. |
| A. | Sulphate resistant cement |
| B. | Alumina |
| C. | Aggregate |
| D. | Pozzolana |
| Answer» D. Pozzolana | |
| 19. |
For thin slabs and walls, the maximum size of coarse aggregates should be limited to ______ thickness of the concrete section. |
| A. | one-third |
| B. | one-fourth |
| C. | two-third |
| D. | three fourth |
| Answer» C. two-third | |
| 20. |
Aggregate impact value gives an indication of aggregates |
| A. | Wearing capacity |
| B. | Water resistance |
| C. | Water absorption |
| D. | Toughness |
| E. | Shape |
| Answer» E. Shape | |
| 21. |
Consider the following statements:1. A high aggregate impact value indicates strong aggregates.2. A low aggregate crushing value indicates high crushing strength of aggregates.3. Aggregates having elongation index values greater than 16% are generally considered suitable for pavement construction.4. Flakiness index of aggregates should not be less than 25% for use in road construction.Which of the above statements are correct? |
| A. | 2 and 3 only |
| B. | 2 and 4 only |
| C. | 1 and 3 only |
| D. | 1 and 4 only |
| Answer» B. 2 and 4 only | |
| 22. |
If in a concrete mix the fineness modulus of coarse aggregate is 7.6., the fineness modulus of fine aggregate is 2.8 and the economic value of the fineness modulus of combined aggregate is 6.4 then the proportion of fine aggregate in coarse aggregate is |
| A. | 25% |
| B. | 33.3% |
| C. | 50% |
| D. | 66.6% |
| Answer» C. 50% | |
| 23. |
A curve showing percentage passing on ordinate v/s sieve size on abscissa of aggregate a horizontal portion for certain range indicates: |
| A. | Continuous grading |
| B. | Gap grading |
| C. | Mix grading |
| D. | porous grading |
| Answer» C. Mix grading | |
| 24. |
Deval Attrition Test is used to determine which of the the following ? |
| A. | Aggregate abrasion value |
| B. | Aggregate impact value |
| C. | Aggregate roughness value |
| D. | Aggregate crushing value |
| Answer» B. Aggregate impact value | |
| 25. |
If the sum of the percentage amount of coarse aggregate retained is 694.5, then calculate the fineness modulus of coarse aggregate. |
| A. | 70.86 |
| B. | 69.45 |
| C. | 0.6945 |
| D. | 6.945 |
| Answer» E. | |
| 26. |
C.R.R.I charts are used to obtain a relationship between strength of concrete and |
| A. | water cement ratio |
| B. | workability |
| C. | grading of aggregate |
| D. | fineness modulus |
| Answer» B. workability | |
| 27. |
As per the National Building Code of India 2016, the safe bearing capacity of a cohesion less fine loose dry sand is: |
| A. | 440 kN/m2 |
| B. | 300 kN/m2 |
| C. | 100 kN/m2 |
| D. | 500 kN/m2 |
| E. | 550 kN/m2 |
| Answer» D. 500 kN/m2 | |
| 28. |
Bulking of sand occurs in the moisture content of _____. |
| A. | 3% |
| B. | 5% |
| C. | 10% |
| D. | 12% |
| Answer» C. 10% | |
| 29. |
If fineness modulus of sand is 2.5, it is graded as: |
| A. | Very fine sand |
| B. | Fine sand |
| C. | Medium sand |
| D. | Coarse sand |
| Answer» C. Medium sand | |
| 30. |
Give an example for flaky shape of aggregate. |
| A. | Pit sand |
| B. | Crushed rock |
| C. | Blown sand |
| D. | Laminated rock |
| Answer» E. | |
| 31. |
For concrete to be used for making airport runway, the aggregate impact value should not be more than: |
| A. | 10% by weight |
| B. | 30% by weight |
| C. | 25% by weight |
| D. | 45% by weight |
| Answer» C. 25% by weight | |
| 32. |
If the engineer – in – charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate does not exceed |
| A. | 10 mm |
| B. | 15 mm |
| C. | 20 mm |
| D. | 25 mm |
| Answer» D. 25 mm | |
| 33. |
For a satisfactory workable concrete with a constant W.C. ratio increase in aggregate-cement ratio |
| A. | Increases the strength of concrete |
| B. | Decreases the strength of concrete |
| C. | No effect on the strength of concrete |
| D. | None of these |
| Answer» B. Decreases the strength of concrete | |
| 34. |
An aggregate is termed as flaky if |
| A. | its least lateral dimension is less than 0.6 times its mean dimension |
| B. | its length is 1.8 times more than its mean dimension. |
| C. | its least lateral dimension is less than 1.8 times its mean dimension |
| D. | its length is 0.6 times more than its mean dimension |
| Answer» B. its length is 1.8 times more than its mean dimension. | |
| 35. |
Absorption capacity of an aggregate refers to the difference expressed in appropriate proportion in water content between |
| A. | a wet aggregate and a dry aggregate |
| B. | a dry aggregate and an oven-dry aggregate |
| C. | a saturated surface-dry aggregate and a dry aggregate |
| D. | a saturated surface-dry aggregate and an oven-dry aggregate |
| Answer» E. | |
| 36. |
In a concrete mix, if the maximum size of coarse aggregate is increases. The proportion of fine to coarse aggregate should be |
| A. | Increased |
| B. | Decreased |
| C. | Kept the same |
| D. | Not dependent on size of aggregates |
| Answer» C. Kept the same | |
| 37. |
IF_THE_AGGREGATES_ARE_EXCEPTIONALLY_STRONG_THEN_THEY_ARE_HAVING_IMPACT_VALUE?$ |
| A. | Less than 10 |
| B. | Less than 15 |
| C. | Less than 30 |
| D. | Greater than 30 |
| Answer» B. Less than 15 | |
| 38. |
The specific gravity for aggregates should be within the range of$ |
| A. | 2.5-2.8 |
| B. | 2.6-2.9 |
| C. | 2.4-2.6 |
| D. | 2.2-2.6 |
| Answer» C. 2.4-2.6 | |
| 39. |
The skid number for highways should not be less than$ |
| A. | 55 |
| B. | 45 |
| C. | 35 |
| D. | 25 |
| Answer» B. 45 | |
| 40. |
The sum of flakiness index and elongation index should not exceed |
| A. | 15 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» D. 40 | |
| 41. |
The flakiness index for surface dressing should not exceed |
| A. | 15% |
| B. | 25% |
| C. | 35% |
| D. | 45% |
| Answer» C. 35% | |
| 42. |
The crushing value of the aggregate determines its |
| A. | Hardness |
| B. | Strength |
| C. | Toughness |
| D. | Durability |
| Answer» C. Toughness | |
| 43. |
The capability of aggregate to resist more weathering action and wheel load is calle? |
| A. | Hardness |
| B. | Toughness |
| C. | Durability |
| D. | Angularity |
| Answer» D. Angularity | |
| 44. |
Impact value is used to measure |
| A. | Hardness |
| B. | Toughness |
| C. | Wheel load |
| D. | Strength |
| Answer» C. Wheel load | |
| 45. |
Which of the following is a soft aggregate? |
| A. | Brick |
| B. | Gravel |
| C. | Clay |
| D. | Silt |
| Answer» B. Gravel | |
| 46. |
Soft aggregates are used in |
| A. | Lower layers |
| B. | Upper layers |
| C. | Everywhere in the pavement |
| D. | Depends on the material |
| Answer» B. Upper layers | |
| 47. |
Sand obtained from river is used as |
| A. | Course aggregate |
| B. | Fine aggregate |
| C. | Filling materials |
| D. | Substitute |
| Answer» C. Filling materials | |
| 48. |
Stone aggregate do not have to resist |
| A. | Weathering effect |
| B. | Traffic load |
| C. | Wheel load stress |
| D. | Soil load |
| Answer» E. | |
| 49. |
If the shear strength of the non-cohesive soil is 84KN/m2 and angle of friction is 30 degrees, then the normal strength in KN/m2 is |
| A. | 140 |
| B. | 141 |
| C. | 143 |
| D. | 145 |
| Answer» E. | |
| 50. |
The plate bearing test is used to evaluate |
| A. | Modulus of sub grade reaction |
| B. | Modulus of sub base reaction |
| C. | Modulus of base reaction |
| D. | Modulus of pavement |
| Answer» B. Modulus of sub base reaction | |