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MCQs 1: Percentage of free carbon in bitumen is______________?

more than that in tar less than that in tar equal to that in tar none of the above
Answer Explanation

MCQs 2: In CBR test the value of CBR is calculated at_______________?

2.5 mm penetration only 5.0 mm penetration only 7.5 mm penetration only both 2.5mm and 5.0 mm penetrations
Answer Explanation

MCQs 3: The maximum allowable Los Angeles abrasion value for high quality surface course is_______________?

10% 20 % 30% 45 %
Answer Explanation

MCQs 4: The ductility value of bitumen for suitability in road construction should not be less than____________?

30 cm 40 cm 50 cm 60 cm
Answer Explanation

MCQs 5: Which of the following represents hardest grade of bitumen ?

30/40 60/70 80/100 100/120
Answer Explanation

MCQs 6: Bitumen of grade 80/100 means______________?

its penetration value is 8 mm its penetration value is 10 mm its penetration value is 8 to 10 mm its penetration value is 8 to 10 cm
Answer Explanation

MCQs 7: Softening point of bitumen to be used for read construction at a place where maximum temperature is 40° C should be______________?

less-than 40°C greater than 40°C equal to 40°C none of the above
Answer Explanation

MCQs 8: 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______________?

0 3 5 7
Answer Explanation

MCQs 9: Group index method of design of flexible pavement is_______________?

a theoretical method an empirical method based on physical properties of subgrade soil an empirical method based on strength characteristics of subgrade soil a semi empirical method
Answer Explanation

MCQs 10: Flexible pavement distribute the wheel load_____________?

directly to subgrade through structural action through a set of layers to the subgrade none of the above
Answer Explanation

MCQs 11: The method of design of flexible pavement as recommended by IRC is____________?

group index method CBR method Westergaard method Benkelman beam method
Answer Explanation

MCQs 12: Penetration test on bitumen is used for determining its_____________?

grade viscosity ductility temperature susceptibility
Answer Explanation

MCQs 13: The recommended grade of tar for grouting purpose is_______________?

RT-1 RT-2 RT.3 RT-5
Answer Explanation

MCQs 14: The maximum limit of water absorption for aggregate suitable for road construction is____________?

0.4 % 0.6% 0.8 % 1.0 %
Answer Explanation

MCQs 15: RC-2, MC-2 and SC-2 correspond to_______________?

same viscosity viscosity in increasing order from RC-2 to SC-2 viscosity in decreasing order from RC-2 to SC-2 none of the above
Answer Explanation

MCQs 16: For rapid curing cutbacks, the oil used is______________?

gasoline kerosene oil light diesel heavy diesel
Answer Explanation

MCQs 17: Bottom most layer of pavement is known as_____________?

wearing course base course sub-base course subgrade
Answer Explanation

MCQs 18: The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is______________?

1000 10000 100000 1000000
Answer Explanation

MCQs 19: Tyre pressure influences the______________?

total depth of pavement quality of surface course both the above none of the above
Answer Explanation

MCQs 20: Select the correct statement_____________?

More the value of group index, less thickness of pavement will be required More the value of CBR, greater thickness of pavement will be required Minimum and maximum values of group index can be 0 and 20 respectively all of the above
Answer Explanation

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