MCQ IN REASONING &LOGICS- 10

Civil Engineering Assertion and Reason type Objective Questions
Free online practice objective Questions for exams: Civil Engineering
Assertion and Reason MCQ Test Civil Engineering

Directions: Each of the Following items consists of two statements, one labelled as the ‘Assertion (A)’ and the other as ‘Reason (R)’. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Codes:
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R. are individually true and R is the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

1. Assertion (A): Road camber helps in surface drainage.
Reason (R): In a curved road alignment, super elevation serves the purpose of camber.
Ans. (b)

2. Assertion (A): California Bearing Ratio Test is carried out to evaluate the
stability of soil sub grade and other flexible pavement materials.
Reason (R): It is essential that at no time is the soil sub grade as well as other flexible pavement materials over stressed.
Ans. (c)

3. Assertion (A): Wind Rose Diagrams, showing wind direction, duration and intensity are an essential requirement for planning the best direction of main runway of the airport.
Reason (R): Corrections for elevation temperature and gradient have to be applied to
determine the length of the main runway on airport, as per ICAO recommendations.
Ans. (b)

4. Assertion (A): Runway capacity will be more in airport operating under VFR than IFR.
Reason (R): VFR gives more clear visual reference of airport during good weather conditions.
Ans. (a)

5. Assertion (A): Rankine’s earth pressure theory should not be used for concrete retaining walls and Coulomb’s theory should not be used for estimating passive, earth pressure.
Reason (R): Rankine assumed that the retaining wall has a vertical back and Coulomb assumed that the resultant reaction due to earth pressure aces at one-third the height of the wall.
Ans. (b)

6. Assertion (A): Generally driven piles are adopted in granular soils and not in clays.
Reason (R): Vibratory loading helps in densification of sands but it has adverse effects in clays.
Ans. (a)

7. Assertion (A): Under-reamed piles are suitable for loose filled, up sites and black-cotton, soils.
Reason (R): Black cotton soils have expansive montmorillonite clay materials.
Ans. (a)

8. Assertion (A): Foundation on expansive soils must be designed for a high a bearing pressure as possible consistent with bearing capacity and settlement requirement.
Reason (R): Lightly loaded single and two storeyed buildings experience maximum damage when built on expansive soils.
Ans. (a)

9. Assertion (A): Triangulation networks are to be formed by well conditioned triangles.
Reason (R): Triangulation signals should be conspicuous and, centred accurately over the stations.
Ans. (b)

10. Assertion (A): The rate of hydration is faster in finer cements.
Reason (R): The surface area of finer cement is more in case of finer cement.
Ans. (a)

11. Assertion (A): Strength of concrete is reduced due to segregation
Reason (R): Reducing the workability of concrete mix results in segregation.
Ans. (c)

12. Assertion (A): The lower the difference between the minimum strength and the mean strength of a concrete mix, the lower the
cement content to be used.
Reason (R): The method for controlling, the difference between the minimum strength and the mean strength is quality control.
Ans. (d)

13. Assertion (A): Shearing force may be defined as the rate of change of loading moment.
Reason (R): Shearing force at a section is the algebraic sum of the forces to the left of the section.
Ans. (b)

14. Assertion (A): The provision of lateral reinforcement in RCC columns is not mandatory.
Reason (R): The lateral reinforcement in RCC columns helps in prevention possible bulking of longitudinal reinforcement.
Ans. (d)

15. Assertion (A): Method of moment distribution in classifiable as a force method.
Reason (R): The method consists computing end moments due to end rotation of the member.
Ans. (d)

16. Assertion (A): Remote sensing is mostly quantitative in nature.
Reason (R): Remote sensing involves the subjective interpretation of the imagery.
Ans. (d)

17. Assertion (A): In water-bound macadam construction, grade I has better load dispersion characteristics as compared to
grade III aggregates.
Reason (R): The plasticity index of the binding material should be less than 6%.
Ans. (d)

18. Assertion (A): Dowel bars are provided at expansion joints and sometimes also at contraction joints in cement concrete slabs.
Reason (R): Longitudinal joints in cement concrete pavements are constructed with tie bars
Ans. (b)

19. Assertion (A): When a turnout is taken off from a curved track, it is called gauntlet track.
Reason (R): When a turnout from a curved track turns away in the opposite direction, the curves are said to be of
contrary flexure.
Ans. (d)

20. Assertion (A): In case of airports, the innermost portion of approach zone, where any obstruction is to be critically
viewed, is known as the clear zone.
Reason (R): The area of airport, other than the approach zone, which is used for turning of aircrafts, is called the turning zone.
Ans. (b)

....................................................----------------------------------..............................................................