CIVIL ENGINEERING QUIZ-BMC(concrete)

CIVIL ENGINEERING QUIZ-BMC(concrete)

1. The height of the mould(cone) used for slump test is :-

A) 450 mm
B) 300 mm
C) 200 mm
D) 100 mm

... Answer is B)
300 mm "

2. The strength of concrete is inversely proportional to

A) water cement ratio
B) cement water ratio
C) sand cement ratio
D) water aggregate ratio

... Answer is A)
water cement ratio "

3. The pH value of water for construction should be not less than:-

A) 7
B) 8
C) 6
D) 9

... Answer is C)
6"

4. What does the "slump test" for concrete determine?

A) strength
B) durability
C) workability
D) water content

... Answer is C)
workability "

5. Fineness modulus gives idea about of the following?

A) surface area of the particles in aggregates
B) texture of the particles in aggregates
C) shape of the particles in aggregates
D) mean size of particles in aggregates

... Answer is D)
mean size of particles in aggregates"

6. The difference in shrinkage btw surface and interior of concrete results in____

A) efflorescence
B) crazying
C) segregation
D) bleeding

... Answer is B)
crazying"

7. the construction of temporary structure to support an ussafe sturcture is termed as___

A) raking
B) shoring
C) elevators
D) scaffolding

... Answer is B)
shoring"

8. if the slump of concrete mix is 70 mm, its workability is considered to be

A) very low
B) low
C) medium
D) high

... Answer is C)
medium"

9. the separation of the coarse aggregates from concrete during its transportation is

A) segregation
B) shrinkage
C) bleeding
D) creeping

... Answer is A)
segregation"

10. in slump test, in determining workability of concrete, the slump is expressed in

A) cubic centimetre/hour
B) square centimetre/hour
C) centimetres
D) hours

... Answer is C)
centimetres"

11. A concrete is said to be workable if

A) it shows signs of bleeding
B) it shows signs of segregation
C) it can be easily mixed,placed and compacted
D) it is in the form of a paste

... Answer is C)
it can be easily mixed,placed and compacted"

12. workability of concrete mix having very low water-cement ratio should be obtained by

A) flexural strength test
B) slump test
C) compaction factor test
D) any one of the above

... Answer is C)
compaction factor test"

13. more water should not be added in the concrete mix, as it will increase

A) strength
B) durability
C) water cement ratio
D) all of the above

... Answer is C)
water cement ratio"

14. the process of proper and accurate measurement of concrete ingredients for uniformity of proportion is known as___

A) mixing
B) batching
C) curing
D) grading

... Answer is B)
batching"

15. 'Vee-bee' consistometer is used to find____ of concrete.

A) permeabilty
B) flexural behavior
C) compressive strength
D) workability

... Answer is D)
workability"

16. curing compounds are made with the bases of which of the following?

A) chlorinated rubber only
B) synthetic resin only
C) wax only
D) all of the above

... Answer is D)
all of the above"

17. if light weight aggregates are used, then the density of conventional concrete is___
Quartz,shale,basalt,granite,marble,gypsum,mica

A) 980 to 2540 kg/m3
B) 1760 to 1280 kg/m3
C) 2540 to 2560 kg/m3
D) 480 to 1760 kg/m3

... Answer is D)
480 to 1760 kg/m3 "

18. what is the range of specific heat of concrete?

A) 820 to 1020 j/kg
B) 804 to 1270 j/kg
C) 840 to 1170 j/kg
D) 800 to 840 j/kg

... Answer is C)
840 to 1170 j/kg "

19. what is the upper limit of suspended particles in water for the preparation of concrete?

A) 2000 ppm
B) 4000 ppm
C) 50 ppm
D) 500 ppm

... Answer is A)
2000 ppm"

20. in construction terminology, what does CBW stands for?

A) concrete block wall
B) concrete bitumen wall
C) common boundary wall
D) none of the above

... Answer is B)
concrete bitumen wall "