Civil Engineering MCQ Short Test-13

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1➤ Crushing strength of a good building stone should be more than .

ⓐ 200 MPa
ⓑ 150 MPa
ⓒ 50 MPa
ⓓ 100 MPa

2➤ Maximum permissible 'wear in stones for road work' is

ⓐ 2
ⓑ 3
ⓒ 1
ⓓ 4

3➤ which of the following statements is not true in case of portland slag cement

ⓐ better sulphate resistance
ⓑ lower heat of hydration
ⓒ slag should not be in glassy form
ⓓ slower early strength

4➤ In ordinary cement, about 99% of its final strength is achieved i

ⓐ 28 days
ⓑ 15 days
ⓒ 1 year
ⓓ 7 days

5➤ In the process of hydration of OPC, to complete all chemical reaction, the water requirement is

ⓐ 10% only
ⓑ 20% to 25%
ⓒ 20% to 60%
ⓓ 50% to 30%

6➤ bulking of sand occurs due to

ⓐ surface tension
ⓑ air in voids
ⓒ moisture in voids
ⓓ capillarity action

7➤ what is the main reason to use lime in the cement slurry during the plastering in the top coat

ⓐ To make the surface bright
ⓑ To improve the workability of plaster
ⓒ To make the plaster non-shrinkable
ⓓ To harden the cement

8➤ hardwood is produce by which of following tress

ⓐ kail
ⓑ chir
ⓒ pine
ⓓ Shishum

9➤ Assertion (A): Rankine's theory is generally used for finding out the buckling load of intermediate columns. Reason (R): Euler's theory gives higher values for buckling loads in intermediate columns

ⓐ both A and R are true and R is the correct explanation of A
ⓑ both A and R are true but R is not a correct explanation of A
ⓒ A is false but R is true
ⓓ A is true but R is false

10➤ on increasing the temperature of liquid the viscosity of liquid

ⓐ decreases
ⓑ increasing
ⓒ both
ⓓ none

11➤ what is the following respresnt unit of kinematic viscosity

ⓐ cm2/s
ⓑ gm/cm-sec
ⓒ gm/cm2-sec
ⓓ none

12➤ the modulus of elasticity of steel is more than that of concrete. it indicates that steel

ⓐ less elastic
ⓑ less plastic
ⓒ more plastic
ⓓ None of these

13➤ Which of the below is not a property of ferro cement?

ⓐ Capacity to resist shock
ⓑ No need of formwork
ⓒ Impervious nature
ⓓ Strength per unit mass is low

14➤ How many types of cracks can occur in a building?

ⓐ 6
ⓑ 3
ⓒ 5
ⓓ 2

15➤ Creep in concrete structure increases with:

ⓐ Increase in water
ⓑ Decrease in temperature
ⓒ Increase in humidity
ⓓ Decrease in humidity

16➤ The main reason for cracks in masonry joints is

ⓐ Moisture
ⓑ Sulphate
ⓒ Sodium
ⓓ Magnesium

17➤ To control corrosion, concrete with _________ is used.

ⓐ Low permeability
ⓑ More coarse aggregates
ⓒ Low thermal coefficient
ⓓ More cement content

18➤ Modulus of elasticity of concrete, E is calculated using:

ⓐ 50√f'c, MPa.
ⓑ 7000√f'c, MPa.
ⓒ 5000√f'c, MPa.
ⓓ 500√f'c, MPa.

19➤ The active earth pressure of a soil is proportional to (where φ is the angle of friction of the soil)

ⓐ tan2 (45° + φ/2)
ⓑ tan (45° - φ)
ⓒ tan2 (45° - φ/2)
ⓓ tan (45° + φ)

20➤ The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter, is known

ⓐ liquid limit
ⓑ shrinkage limit
ⓒ plastic limit
ⓓ permeability limit

21➤ In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is

ⓐ 50%
ⓑ 65%
ⓒ 35%
ⓓ none of these.

22➤ The quantity of seepage of water through soils is proportional to

ⓐ coefficient of permeability of soil
ⓑ total head loss through the soil
ⓒ neither (a) nor (b)
ⓓ both (a) and (b)

23➤ The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known

ⓐ plastic limit
ⓑ shrinkage limit
ⓒ liquid limit
ⓓ permeability limit.

24➤ When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as

ⓐ quick test
ⓑ consolidated undrained test
ⓒ drained test
ⓓ none of these.

25➤ Under-reamed piles are generally

ⓐ driven piles
ⓑ precast piles
ⓒ bored piles
ⓓ all the above.