1. The NHDP are being undertaken by private companies on the basis of __________
a) Profit
b) Revenue
c) BOT
d) Commission basis
Explanation: In India mostly private and govt. sectors follow BOT which means build operate transfer, it is built by a private firm and later transferred to govt.
2. The traffic will increase if the __________
a) Price of fuel decreases
b) Price of vehicles decreases
c) Price of fuel decreases
d) Price of vehicles decreases
Explanation: The traffic increases if the prices of vehicle decreases, price of fuel may increase and decrease, but if the price of the vehicle decreases then the traffic increases.
3. The traffic population is estimated by __________
a) Arithmetic method
b) Geometric method
c) Incremental increase method
d) Harmonic method
Explanation: The population forecast is calculated by
P=P0 (1+r)n
Where, P is the expected population, n is the number of years, P0 is the present population.
4. The materials not included in highway construction are __________
a) Stone
b) Dust
c) Soil
d) Petrol
Explanation: 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.
5. 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
Explanation: 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.
6. The layer which is constructed above embankment is called __________
a) Sub grade
b) Fill
c) Base
d) Sub base
Explanation: 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.
7. The highest CBR number is required for __________
a) Pavement
b) Sub grade
c) Sub base
d) Base
Explanation: CBR number decreases with an increase in height, the soil requires the highest CBR and the pavement requires the lowest CBR.
8. What is the most common waste material used in construction?
a) Fly ash
b) Slag
c) Pozzolona
d) Rice husk
Explanation: Fly ash is an industrial waste obtained from the thermal plants, it has been mandatory to use the fly ash in bricks.
9. Bitumen is a by-product of __________
a) Wood
b) Petroleum
c) Kerosene
d) Coal
Explanation: Bitumen is obtained by burning the petroleum at high temperatures, it is mostly used in the construction of flexible pavements.
10. Tar is a by-product of __________
a) Wood
b) Petroleum
c) Kerosene
d) Coal
Explanation: Tar is a by-product which is obtained from wood, tar and bitumen may look similar, but they are not the same.