Concrete Technology MCQ Practice Questions (Civil Eng) Set 6

The dimensions of a 35 litre forma for measuring aggregates by volume, are:


Options are :

  • Length 39 cm, breadth 25 cm, height 32 cm
  • Length 30 cm, breadth 25 cm, height 30 cm
  • Length 27 cm, breadth 27 cm, height 48 cm
  • None of these
  • Length 220 cm, breadth 25 cm, height 40 cm

Answer :Length 27 cm, breadth 27 cm, height 48 cm

Cement used for normal concrete construction, is obtained by burning a mixture of:


Options are :

  • Silicious and argillaceous materials
  • None of these
  • Silicious, argillaceous and calcareous materials
  • Argilaceous and calcareous materials
  • Silicious and catcareous materials

Answer :Silicious, argillaceous and calcareous materials

Permissible compressive strength of M 200 concrete grade is:


Options are :

  • 300 kg/cm^(2)
  • 250 kg/cm^(2)
  • 150 kg/cm^(2)
  • 200 kg/cm^(2)
  • 100 kg/cm^(2)

Answer :200 kg/cm^(2)

Theory of Structures MCQ Practice Questions (Civil Eng) Set 6

If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is:


Options are :

  • 2700 bags
  • 2000 bags
  • 2400 bags
  • 2200 bags
  • 3000 bags

Answer :2700 bags

A flaky aggregate is said to be elongated if its length is:


Options are :

  • Four times the mean size
  • Twice the mean size
  • Equal to the mean size
  • Five times the mean size
  • Thrice the mean size

Answer :Twice the mean size

Pick up the correct statement from the following:


Options are :

  • The concrete does not set at freezing point
  • The concrete cured at a temperature below 23C, gains strength up to 28 days
  • The concrete gains strength due to hydration of cement
  • The strength of concrete increases with its age
  • All the above

Answer :All the above

Construction Management MCQ Practice Questions (Civil Eng) Set 3

For preparing ordinary concrete, the quantity of water used, is:


Options are :

  • 5% by weight of aggregates plus 20% of weight of cement
  • 30% by weight of aggregates plus 10% of weight of cement
  • 10% by weight of aggregates plus 10% of weight of cement
  • None of these
  • 5% by weight of aggregates plus 30% of weight of cement

Answer :5% by weight of aggregates plus 30% of weight of cement

The strength and quality of concrete, depend upon:


Options are :

  • All the above
  • Shape of aggregates
  • Surface texture of aggregates
  • Grading of aggregates
  • Surface area of aggregates

Answer :All the above

A concrete having a slump of 6.5 cm, is said to be:


Options are :

  • Plastic
  • Semi-plastic
  • None of these
  • Dry
  • Earth moist

Answer :Plastic

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 7

Setting time of cement increases by adding:


Options are :

  • Sodium oxide
  • None of these
  • Hydrogen peroxide
  • Calcium chloride
  • Gypsum

Answer :Gypsum

Strength of concrete with passage of time:


Options are :

  • Increases
  • Remains constant
  • Fluctuates
  • Decreases

Answer :Increases

An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than:


Options are :

  • 16.5 mm
  • 18.5 mm
  • 22.5 mm
  • 15.5 mm
  • 13.5 mm

Answer :13.5 mm

Concrete Technology MCQ Practice Questions (Civil Eng) Set 2

For the construction of the retaining structures, the type of concrete mix to be used, is:


A.

1 : 3 : 6


B.

1 : 2 :4


C.

1 :

: 3


D.

1 : 1 : 2


E.

1 : 4 : 8


Options are :

  • A
  • C
  • B
  • E
  • D

Answer :C

Expansion joints are provided if the length of concrete structures exceeds:


Options are :

  • 45 m
  • 25 m
  • 15 m
  • 35 m
  • 10 m

Answer :45 m

According to IS : 382-1963, a good aggregate should be:


Options are :

  • All the above
  • Sufficiently strong
  • Chemically inert
  • Hard and durable

Answer :All the above

Concrete Technology MCQ Practice Questions (Civil Eng) Set 4

Log Angles machine is used to test the aggregate for:


Options are :

  • Abrasion resistance
  • None of these
  • Impact value
  • Crushing strength
  • Water absorption

Answer :Abrasion resistance

Concrete gains strength due to:


Options are :

  • Evaporation of water from concrete
  • Hydration of cement
  • All the above
  • Chemical reaction of cement with sand and coarse aggregates

Answer :Hydration of cement

Vicat apparatus is used for:


Options are :

  • Consistency test
  • Test for setting time
  • Test for tensile strength
  • None of these
  • Fineness test

Answer :Consistency test

Irrigation MCQ Practice Questions (Civil Engineering) Set 4

Workability improved by adding:


Options are :

  • Bentonite
  • Calcium chloride
  • Fly ash
  • All the above
  • Hydrated lime

Answer :All the above

If 50 kg of fine aggregates and 100 kg of coarse agregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is:


Options are :

  • 8 kg
  • 15 kg
  • 14 kg
  • 10 kg
  • 12 kg

Answer :12 kg

If fineness modulus of sand is 2.5, it is graded as:


Options are :

  • Medium sand
  • Very coarse sand
  • Fine sand
  • Very fine sand
  • Coarse sand

Answer :Fine sand

Hydraulics MCQ Practice Questions (Civil Engineering) Set 9

Pick up the incorrect statement while performing preliminary test on concrete:


Options are :

  • Concrete mix should be stored in air-tight containers
  • Cement should be mixed by hand in order to maintain uniformity
  • Proportions of the material and water should be the same as to be used at the work site
  • concrete ingredients should be kept at a temperature of 37 2C
  • None of these

Answer :concrete ingredients should be kept at a temperature of 37 2C

Sand requiring a high water cement ratio, belongs to:


Options are :

  • Zone IV
  • Zone I
  • Zone III
  • Zone II

Answer :Zone I

If P, Y and Z are the weights of cement, fine aggregates and coarse aggregates respetively and W/C is the water cement ratio, the minimum quantity of water to be added to first batch, is obtained by the equation:


Options are :

  • 0.2P + 0.5Y + 0.1Z = W/C x P
  • 0.3P + 0.1Y + 0.01Z = W/C x P
  • 0.4P + 0.2Y + 0.01Z = W/C x P
  • 0.5P + 0.3Y + 0.01Z = W/C x P
  • 0.1P + 0.3Y + 0.1Z = W/C x P

Answer :0.3P + 0.1Y + 0.01Z = W/C x P

Concrete Technology MCQ Practice Questions (Civil Eng) Set 7

An ideal ware house, is provided:


Options are :

  • 15 cm thick concrete floor laid on a dry course of soling
  • Few windows which remain generally closed
  • All the above
  • Water proof roof
  • Water proof masonry walls

Answer :All the above

If the average compressive strength is 4000 kg/cm^(2) and standard deviation is 500, the co-efficient of variation is:


Options are :

  • 15%
  • 20%
  • 10%
  • 12.5%
  • 18.5%

Answer :12.5%

The shuttering of a hall measuring 4 m x 5 m, can be removed after:


Options are :

  • 10 days
  • 7 days
  • 5 days
  • 14 days
  • 21 days

Answer :7 days

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 7

For the construction of thin R.C.C. structures, the type of cement to be avoided, is:


Options are :

  • Low heat cement
  • Ordinary Portland cement
  • Rapid hardening cement
  • Sulphate resisting cement
  • Blast furnace slag cement

Answer :Blast furnace slag cement

If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than:


Options are :

  • None of these
  • 40.5 mm
  • 30.5 mm
  • 20.5 mm
  • 50.5 mm

Answer :40.5 mm

Pick up the incorrect statement from the following:


Options are :

  • None of these
  • Admixtures give high strength
  • Admixtures accelerate hydration
  • Admixtures make concrete acid proof
  • Admixtures make concrete water proof

Answer :Admixtures accelerate hydration

Irrigation MCQ Practice Questions (Civil Engineering) Set 2

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