Questions and answers for exam Preparation

MCQs

Total Questions : 59 | Page 1 of 6 pages

Question 1. Which type of lining is adopted when the channels have become stable and no danger of scouring is expected?

Brick lining
Single burnt clay tile lining
In-situ cement concrete lining
Flexible membrane lining in the bed and rigid lining on the sides

Discuss Question

Answer: Option D. -> Flexible membrane lining in the bed and rigid lining on the sides
Answer: (d).Flexible membrane lining in the bed and rigid lining on the sides

Question 2. Safety ladders are generally provided on ___________

side slopes
bed slopes
anywhere on the canal
both side slopes and bed slopes

Discuss Question

Answer: Option A. -> side slopes
Answer: (a).side slopes

Question 3. What is the recommended value of CNS thickness to be used for lining over expansive soil with swelling pressure of 200-300 KN/m²?

75 to 85 cm
90 to 100 cm
105 to 125 cm
> 125 cm

Discuss Question

Answer: Option B. -> 90 to 100 cm
Answer: (b).90 to 100 cm

Question 4. Which of the following statement is incorrect about Expansive soils?

Expansive soils exhibit shrinkage and swelling properties
They have high compressibility and liquid limits with more than 50
Black cotton soil is the most common expansive soil in India
The lesser the swelling pressure, the more troublesome is the soil

Discuss Question

Answer: Option D. -> The lesser the swelling pressure, the more troublesome is the soil
Answer: (d).The lesser the swelling pressure, the more troublesome is the soil

Question 5. The larger the thickness of CNS introduced over the expansive soil, the more will be the resulting swelling in soil.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option B. -> False
Answer: (b).False

Question 6. Safety ladders are provided in large irrigation canals to ______________

enable the fish to pass from one place to another
enable the cattle to cross the canal
enable the swimmers to get out of the canal
provide safe exit to avoid accidental drowning

Discuss Question

Answer: Option D. -> provide safe exit to avoid accidental drowning
Answer: (d).provide safe exit to avoid accidental drowning

Question 7. If the free swell index of soil is more than 100, the soil may be expansive.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 8. CNS material shall be non-swelling with a minimum of ___________

10 KN/m² of cohesion
15 KN/m² of cohesion
20 KN/m² of cohesion
30 KN/m² of cohesion

Discuss Question

Answer: Option A. -> 10 KN/m² of cohesion
Answer: (a).10 KN/m² of cohesion

Question 9. Which of the following is incorrect about the identification of CNS material?

The CNS material can be identified by using A-line chart
The permissible deformation of the CNS layer is 20 mm
The swelling pressure should not exceed 10 KN/m²
The soil with liquid limit less than 30% and plastic index less than 15% is considered suitable

Discuss Question

Answer: Option D. -> The soil with liquid limit less than 30% and plastic index less than 15% is considered suitable
Answer: (d).The soil with liquid limit less than 30% and plastic index less than 15% is considered suitable

Question 10. Lining decreases the channel capacity and consequently reduces the required channel section.