Civil Engineering - Mock Test 19

Question 181

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

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Question 182

Penetration test on bitumen is used for determining its?

A) grade B) viscosity C) ductility D) temperature susceptibility

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Question 183

Which of the following represents hardest grade of bitumen ?

A) 30/40 B) 60/70 C) 80/100 D) 100/120

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Question 184

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

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Question 185

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

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Question 186

The maximum allowable Los Angeles abrasion value for high quality surface course is?

A) 10% B) 20 % C) 30% D) 45 %

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Question 187

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

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Question 188

Los Angeles testing machine is used to conduct?

A) abrasion test B) impact test C) attrition test D) crushing strength test

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Question 189

Which of the following tests measures the toughness of road aggregates ?

A) crushing strength test B) abrasion test C) impact test D) shape test

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Question 190

In soils having same values of plasticity index, if liquid limit is increased, then?

A) compressibility and permeability decrease and dry strength increases B) compressibility, permeability and dry strength decrease C) compressibility, permeability and dry strength increase D) compressibility and permeability increase and dry strength decreases

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