351. The maximum allowable Los Angeles abrasion value for high quality surface course is_______________?
A. 10%
B. 20 %
C. 30%
D. 45 %

352. The ductility value of bitumen for suitability in road construction should not be less than____________?
A. 30 cm
B. 40 cm
C. 50 cm
D. 60 cm

353. Which of the following represents hardest grade of bitumen ?
A. 30/40
B. 60/70
C. 80/100
D. 100/120

354. Bitumen of grade 80/100 means______________?
A. its penetration value is 8 mm
B. its penetration value is 10 mm
C. its penetration value is 8 to 10 mm
D. its penetration value is 8 to 10 cm

355. Softening point of bitumen to be used for read construction at a place where maximum temperature is 40° C should be______________?
A. less-than 40°C
B. greater than 40°C
C. equal to 40°C
D. none of the above

356. 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

357. Group index method of design of flexible pavement is_______________?
A. a theoretical method
B. an empirical method based on physical properties of subgrade soil
C. an empirical method based on strength characteristics of subgrade soil
D. a semi empirical method

358. Flexible pavement distribute the wheel load_____________?
A. directly to subgrade
B. through structural action
C. through a set of layers to the subgrade
D. none of the above

359. The method of design of flexible pavement as recommended by IRC is____________?
A. group index method
B. CBR method
C. Westergaard method
D. Benkelman beam method

360. Penetration test on bitumen is used for determining its_____________?
A. grade
B. viscosity
C. ductility
D. temperature susceptibility

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