250+ TOP MCQs on Materials used in Highway Construction and Answers

Highway Engineering Multiple Choice Questions on “Materials used in Highway Construction”.

1. The materials not included in highway construction are __________
a) Stone
b) Dust
c) Soil
d) Petrol
Answer: d
Clarification: Petrol is not used directly in highway construction, but by-product like bitumen is used. Stone, dust and soil may be used in subgrade and base.

2. For places where there is a passage of flood water then the highway has to be built on __________
a) Embankment
b) Subway
c) Overpass
d) Underpass
Answer: a
Clarification: If the HFL is more than the formation level of the road which is going to be provided, then it has to be built on embankment.

3. The layer which is constructed above embankment is called __________
a) Sub grade
b) Fill
c) Base
d) Sub base
Answer: a
Clarification: The embankment is the lowest layer and it is below the sub grade, base is above sub base, sub base is above the sub grade.

4. The highest CBR number is required for __________
a) Pavement
b) Sub grade
c) Sub base
d) Base
Answer: b
Clarification: CBR number decreases with an increase in height, the soil requires the highest CBR and the pavement requires the lowest CBR.

5. What is the most common waste material used in construction?
a) Fly ash
b) Slag
c) Pozzolona
d) Rice husk
Answer: a
Clarification: Fly ash is an industrial waste obtained from the thermal plants, it has been mandatory to use the fly ash in bricks.

6. Bitumen is a by-product of __________
a) Wood
b) Petroleum
c) Kerosene
d) Coal
Answer: b
Clarification: Bitumen is obtained by burning the petroleum at high temperatures, it is mostly used in the construction of flexible pavements.

7. Tar is a by-product of __________
a) Wood
b) Petroleum
c) Kerosene
d) Coal
Answer: a
Clarification: Tar is a by-product which is obtained from wood, tar and bitumen may look similar, but they are not the same.

8. In the initial stage of construction which type of pavement is cheap?
a) Flexible
b) Rigid
c) Composite
d) WBM
Answer: a
Clarification: Flexible pavements are easy to construct and have cheaper cost than C. C pavements and also they are easily accessible to the users.