Pick up the incorrect statement from the following:

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Pick up the incorrect statement from the following:

A. With passage of time, the strength of cement increases

B. With passage of time, the strength of cement decreases

C. After a period of 24 months, the strength of cement reduces to 50%

D. The concrete made with storage deteriorated cement, gains strength with time

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Increase in the moisture content in concrete

A. Reduces the strength

B. Increases the strength

C. Does not change the strength

D. All of the above

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For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

A. 1 : 3 : 6

B. 1 : 1 ½ : 3

C. 1 : 2 : 4

D. 1 : 1 : 2

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Bulking of sand is

A. Mixing of different sizes of sand particles

B. Mixing of lime with sand

C. Maximum water with sand

D. Swelling of sand when wetted

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Minimum pitch of transverse reinforcement in a column is

A. The least lateral dimension of the member

B. Sixteen times the smallest diameter of longitudinal reinforcement bar to be tied

C. Forty-eight times the diameter of transverse reinforcement

D. Lesser of the above three values

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According to the recommendations of IS : 456-1978, the expansion joints

A. Are provided where plane changes abruptly

B. Are provided to ensure minimum resistance

C. Do not carry reinforcement across them

D. All the above

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A beam curved in plan is designed for

A. Bending moment and shear

B. Bending moment and torsion

C. Shear and torsion

D. Bending moment, shear and torsion

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Which of the following has high tensile strength?

A. Plain hot rolled wires

B. Cold drawn wires

C. Heat treated rolled wires

D. All have same tensile strength

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In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

A. Zero

B. Tensile

C. Compressive

D. Tensile or compressive

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The operation of removing humps and hollows of uniform concrete surface, is known as

A. Floating

B. Screeding

C. Trowelling

D. Finishing

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Workability of concrete is measured by

A. Vicat apparatus test

B. Slump test

C. Minimum void method

D. Talbot Richard test

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Ultimate strength of cold drawn high steel wires

A. Increases with increase in diameter of bar

B. Decreases with increase in diameter of bar

C. Does not depend on diameter of bar

D. None of the above

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To obtain a very high strength concrete, use very fine grained

A. Granite

B. Magnetite

C. Barite

D. Volcanic scoria

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The factor of safety for

A. Steel and concrete are same

B. Steel is lower than that for concrete

C. Steel is higher than that for concrete

D. None of the above

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If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

A. There will be no settlement of columns

B. There will be no differential settlement

C. The settlement of exterior columns will be more than interior columns

D. The settlement of interior columns will be more than exterior columns

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A concrete using an air entrained cement

A. Has strength less than 10% to 15%

B. Has more resistance to weathering

C. Is more plastic and workable

D. Is free from segregation and bleeding

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The type of aggregates of same nominal size, which contain less voids when compacted, are

A. Rounded spherical

B. Irregular

C. Flaky

D. None of these

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If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed

A. 10 cm

B. 15 cm

C. 20 cm

D. 25 cm

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Concrete mainly consists of

A. Cement

B. Aggregates

C. Water

D. All the above

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For the construction of cement concrete dams, the maximum permissible size of the aggregates, is

A. 40 mm

B. 50 mm

C. 60 mm

D. 70 mm

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The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

A. 0.367 x_u

B. 0.416 x_u

C. 0.446 x_u

D. 0.573 x_u

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In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

A. Only (i)

B. Only (ii)

C. Both (i) and (iv)

D. Both (ii) and (iii)

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The design yield stress of steel according to IS: 4561978 is: (Where f_y is the characteristic yield strength of steel)

A. 0.37 f_y

B. 0.57 f_y

C. 0.67 f_y

D. 0.87 f_y

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An aggregate is known as cyclopean aggregate if its size is more than

A. 4.75 mm

B. 30 mm

C. 60 mm

D. 75 mm

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In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

A. Compressive and tensile

B. Tensile and compressive

C. Both compressive

D. Both tensile

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Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

A. Deflect downward

B. Deflect upward

C. Deflect downward or upward

D. None of the above

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Addition of pozzolana to ordinary port land cement, causes

A. Decrease in early strength

B. Reduction in chemical action with sulphates

C. Increase in shrinkage

D. All the above

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In counterfort retaining walls, the main reinforcement in the stem at support is

A. Not provided

B. Provided only on inner face

C. Provided only on front face

D. Provided both on inner and front faces

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To prevent segregation, the maximum height for placing concrete, is

A. 100 cm

B. 125 cm

C. 150 cm

D. 200 cm

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For concreting tunnel linings, transportation of concrete is done by

A. Pans

B. Wheel borrows

C. Containers

D. Pumps

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Pick up the incorrect statement from the following:

A. Concrete for which preliminary tests are conducted, is called controlled concrete

B. Bulking of sand depends upon the fineness of grains

C. Concrete mix 1 : 6 : 12, is used for mass concrete in piers

D. All the above

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Accepted Answer

A. With passage of time, the strength of cement increases

Pick up the incorrect statement from the following:

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Increase in the moisture content in concrete

For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

Bulking of sand is

Minimum pitch of transverse reinforcement in a column is

According to the recommendations of IS : 456-1978, the expansion joints

A beam curved in plan is designed for

Which of the following has high tensile strength?

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

The operation of removing humps and hollows of uniform concrete surface, is known as

Workability of concrete is measured by

Ultimate strength of cold drawn high steel wires

To obtain a very high strength concrete, use very fine grained

The factor of safety for

If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

A concrete using an air entrained cement

The type of aggregates of same nominal size, which contain less voids when compacted, are

If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed

Concrete mainly consists of

For the construction of cement concrete dams, the maximum permissible size of the aggregates, is

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

The design yield stress of steel according to IS: 4561978 is: (Where f_y is the characteristic yield strength of steel)

An aggregate is known as cyclopean aggregate if its size is more than

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

Addition of pozzolana to ordinary port land cement, causes

In counterfort retaining walls, the main reinforcement in the stem at support is

To prevent segregation, the maximum height for placing concrete, is

For concreting tunnel linings, transportation of concrete is done by

Pick up the incorrect statement from the following:

Also checkout

Pick up the incorrect statement from the following:

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Increase in the moisture content in concrete

For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

Bulking of sand is

Minimum pitch of transverse reinforcement in a column is

According to the recommendations of IS : 456-1978, the expansion joints

A beam curved in plan is designed for

Which of the following has high tensile strength?

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

The operation of removing humps and hollows of uniform concrete surface, is known as

Workability of concrete is measured by

Ultimate strength of cold drawn high steel wires

To obtain a very high strength concrete, use very fine grained

The factor of safety for

If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

A concrete using an air entrained cement

The type of aggregates of same nominal size, which contain less voids when compacted, are

If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed

Concrete mainly consists of

For the construction of cement concrete dams, the maximum permissible size of the aggregates, is

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where xu is the depth of neutral axis at the limit state of collapse)

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

The design yield stress of steel according to IS: 4561978 is: (Where fy is the characteristic yield strength of steel)

An aggregate is known as cyclopean aggregate if its size is more than

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

Addition of pozzolana to ordinary port land cement, causes

In counterfort retaining walls, the main reinforcement in the stem at support is

To prevent segregation, the maximum height for placing concrete, is

For concreting tunnel linings, transportation of concrete is done by

Pick up the incorrect statement from the following:

Also checkout

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

The design yield stress of steel according to IS: 4561978 is: (Where f_y is the characteristic yield strength of steel)