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Concrete Technology and Design MCQ Question with Answer

Concrete Technology and Design MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 57
Pick up the correct statement from the following:

Sand stones may be divided into calcareous, siliceous and ferruginous sand stones
Concrete using sand stones, cracks due to excessive shrinkage
Broken bricks produce a concrete having good fire resisting qualities
All the above
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Question No : 58
Pick up the correct statement from the following:

The maximum size of a coarse aggregate, is 75 mm and minimum 4.75 mm
The maximum size of the fine aggregate, is 4.75 mm and minimum 0.075 mm
The material having particles of size varying from 0.06 mm to 0.002 mm, is known as silt
All the above
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Question No : 59
Pick up the incorrect statement from the following. While performing preliminary test on concrete

Proportions of the material and water should be the same as to be used at the work site
Cement should be mixed by hand in order to maintain uniformity
Concrete mix should be stored in air-tight containers
Concrete ingredients should be kept at a temperature of 37° ± 2°C
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Question No : 60
Assertion A : The load factor for live load is greater than that for dead load. Reason R : The live loads are more uncertain than dead loads. Select your answer based on the coding system given below:

Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
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Question No : 61
Pick up the incorrect statement from the following:

In properly graded aggregates, bulk density is more
In single size aggregates, bulk density is least
In single size aggregates, bulk density is maximum
None of these
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Question No : 62
The property of the ingredients to separate from each other while placing the concrete is called

Segregation
Compaction
Shrinkage
Bulking
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Question No : 63
According to IS: 4561978, minimum slenderness ratio for a short column is

Less than 12
Less than 18
Between 18 and 24
More than 24
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