1. The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve is 35, is______________?
A. 0
B. 3
C. 5
D. 7
✅ The correct answer is option A.
Highway Engineering MCQs
2. The thickness of bituminous carpet varies from__________________?
A. 20 to 25 mm
B. 50 to 75 mm
C. 75 to 100 mm
D. 100 to 120 mm
✅ The correct answer is option A.
3. With increase in speed of the traffic stream, the minimum spacing of vehicles________________?
A. increases
B. decreases
C. first decreases and then increases after reaching a minimum value at optimum speed
D. first increases and then decreases after reaching a maximum value at optimum speed
✅ The correct answer is option A.
4. The minimum design speed for hairpin bends in hill roads is taken as_______________?
A. 20 kmph
B. 30 kmph
C. 40 kmph
D. 50 kmph
✅ The correct answer is option A.
5. Which of the following is known as design capacity ?
A. basic capacity
B. theoretical capacity
C. possible capacity
D. practical capacity
✅ The correct answer is option A.
6. Los Angeles testing machine is used to conduct______________?
A. abrasion test
B. impact test
C. attrition test
D. crushing strength test
✅ The correct answer is option A.
7. On a horizontal curve if the pavement is kept horizontal across the alignment, then the pressure on the outer wheels will be_________________?
A. more than the pressure on inner wheels
B. less than the pressure on inner wheels
C. equal to the pressure on inner wheels
✅ The correct answer is option A.
8. RC-2, MC-2 and SC-2 correspond to_______________?
A. same viscosity
B. viscosity in increasing order from RC-2 to SC-2
C. viscosity in decreasing order from RC-2 to SC-2
D. none of the above
✅ The correct answer is option A.
9. The camber of shoulders in water bound macadam roads is________________?
A. equal to the cross slope of pavement
B. less than the cross slope of pavement
C. greater than the cross slope of pavement
D. zero
✅ The correct answer is option A.
10. The shape of the camber, best suited for cement concrete pavements, is_______________?
A. straight line
B. parabolic
C. elliptical
D. combination of straight and parabolic
✅ The correct answer is option A.