Highway Engineering Quiz | Highway Engineering MCQs and Answers

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Questions
81 Select the correct statement.
A More the value of group index, less thickness of pavement will be required.
B More the value of CBR, greater thickness of pavement will be required.
C Minimum and maximum values of group index can be 0 and 20 respectively.
D all of the above

Answer: Minimum and maximum values of group index can be 0 and 20 respectively.
82 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

Answer: an empirical method based on physical properties of subgrade soil
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83 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
A 1000
B 10000
C 100000
D 1000000

Answer: 1000000
84 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

Answer: through a set of layers to the subgrade
85 Bottom most layer of pavement is known as
A wearing course
B base course
C sub-base course
D subgrade

Answer: subgrade
86 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

Answer: 0
87 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

Answer: CBR method
88 For rapid curing cutbacks, the oil used is
A gasoline
B kerosene oil
C light diesel
D heavy diesel

Answer: gasoline
89 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

Answer: greater than 40°C
90 The recommended grade of tar for grouting purpose is
A RT-1
B RT-2
C RT.3
D RT-5

Answer: RT-5
91 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

Answer: same viscosity
92 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

Answer: its penetration value is 8 to 10 mm
93 Penetration test on bitumen is used for determining its
A grade
B viscosity
C ductility
D temperature susceptibility

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

Answer: 30/40
95 The maximum limit of water absorption for aggregate suitable for road construction is
A 0.4 %
B 0.6%
C 0.8 %
D 1.0 %

Answer: 0.6%
96 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

Answer: 50 cm
97 Percentage of free carbon in bitumen is
A more than that in tar
B less than that in tar
C equal to that in tar
D none of the above

Answer: less than that in tar
98 The maximum allowable Los Angeles abrasion value for high quality surface course is
A 10%
B 20 %
C 30%
D 45 %

Answer: 30%
99 If aggregate impact value is 20 to 30 percent, then it is classified as
A exceptionally strong
B strong
C satisfactory for road surfacing
D unsuitable for road surfacing

Answer: satisfactory for road surfacing
100 In CBR test the value of CBR is calculated at
A 2.5 mm penetration only
B 5.0 mm penetration only
C 7.5 mm penetration only
D both 2.5mm and 5.0 mm penetrations

Answer: both 2.5mm and 5.0 mm penetrations
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