1. The void ratio can never be __________
a) Less than 1
b) Greater than 1
c) Less than zero
d) Equal to 1
Explanation: The void ratio can never be less than zero, as it is a positive quantity, but it can be greater than 1 or equal to 1.
2. In Indian system the soil is classified as per __________
a) USCS
b) ISCS
c) BIS
d) ASTM
Explanation: In Indian system the soil is classified as per ISCS. In international as per USCS, BIS regards the standard in India and ASTM in USA.
3. The theoretical void ratio of sand is taken as __________
a) 0.87
b) 0.91
c) 1.01
d) 1.03
Explanation: The theoretical void ratio of sand is taken as 0.91.
4. If the water content of a soil sample is 25%, and dry density is 15KN/m3 then its dry density in KN/m3 is?
a) 18.75
b) 19
c) 20
d) 21
Explanation: Ὑd=Ὓ/1+w
Ὓ=15*1.25
=18.75KN/m3.
5. If the permeability is high then its void ratio is __________
a) High
b) Low
c) Medium
d) Depends on soil
Explanation: If the void ratio is high then, the permeability of the soil will be very high, for example gravel in which there is a lot of void ratio so the permeability is very high.
6. The property of soil by which its state and size changes are called __________
a) Activity
b) Sensitivity
c) Thixotropy
d) Shear strength
Explanation: Thixotropy means changing in touch; it is used for very sensitive soils.
7. What is the specific gravity of sand?
a) 2.5
b) 2.6
c) 2.7
d) 2.9
Explanation: The specific gravity of sand is usually considered as 2.7-2.8 in non-availability of data.
8. In field, the dry density of soil can be determined by?
a) Oven method
b) Sand bath
c) Burning
d) Sand replacement
Explanation: If there is no facility of the lab, then the dry density can be instantly tested by burning.
9. Which type of roller is most suitable for soil compaction?
a) Smooth roller
b) Sheep foot roller
c) Pneumatic roller
d) Hydraulic roller
Explanation: The sheep foot roller compact the soil both by the action of kneading and pressing, so they are the most suitable for compaction.
10. The unpaved shoulder usually consists of __________
a) Gravel
b) Sand
c) Bricks
d) Clay
Explanation: In the case of unpaved shoulders, gravel is most preferred because of its permeability, strength and other advantages.