Spot test is used to detect

1. impurity in bitumen
2. cohesion in bitumen
3. cracked bitumen
4. softening point of bitumen

According to IS 73, the minimum penetration of VG 30 grade bitumen tested at 25 degree C is

1. 80
2. 60
3. 45
4. 35

Softening point of bitumen to be used for road construction at a place where maximum temperature is 40°C should be

1. greater than 40°C
2. less than 40°C
3. equal to 40°C
4. none of these

Bitumen grade 70/90 indicates

1. dynamic viscosity
2. kinematic viscosity
3. specific gravity
4. penetration

According to the Indian standard, which of the following Bitumen is suitable for 7-day average maximum air temperature of 46°C?

1. VG10
2. VG20
3. VG30
4. VG40

Usually, what is the maximum permissible Los Angles abrasion value (%) for dense bituminous macadam?

1. 45
2. 25
3. 35
4. 55

Which of the following grades of bitumen is the most suitable for a 7 days maximum average air temperature of 15°C?

1. VG 30
2. VG 40
3. VG 10
4. VG 20

The consistency and flow resistance of bitumen can be determined from which of the following?

1. Penetration test
2. Ductility test
3. Softening point test
4. Viscosity test

Among the following which one is not a desirable property of the subgrade soil to be used as a highway material?

1. Stability
2. Ease of compaction
3. Good drainage
4. Bitumen adhesion

According to IS 73, the paving bitumen should be homogeneous and shall not foam when heated to

1. 160 degree C
2. 170 degree C
3. 180 degree C
4. 200 degree C
5. 175 degree C

As per IRC, in surface dressing, the quantity of Bitumen used for every 10 m² of the surface in first coat on WBM road is

1. 17-19.5 kg
2. 10 12 kg
3. 12- 17 kg
4. 19 -22 kg

In 85/25 grade of Bitumen, the figure of 25 represents

1. Softening point in °C
2. Melting point in °C
3. Flash point in °C
4. Penetration

Consider the following statements in the context of properties of bitumen.

Statement-1: The softening point of bitumen is the time taken by the balls in the ring-and-ball apparatus to touch the lower plate of the apparatus.
Statement-2: Oxidation leads to softening of the bitumen.

Which of the following is CORRECT?

1. Statement-1 is TRUE and Statement-2 is FALSE
2. Both statements are False
3. Both statements are True
4. Statement- 1 is FALSE and Statement-2 is TRUE