Concrete Technology Questions and Answers – Factors Causing Variation in the Quality of Concrete

This set of Concrete Technology MCQs focuses on “Factors Causing Variation in the Quality of Concrete”.

1. Generally what is the w/c ratio?
a) .25
b) .5
c) .75
d) 1
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2. Silica fume is _________
a) Less reactive
b) Neutral
c) More reactive
d) Absent in concrete
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3. Content of SiO₂ in silica fume?
a) 52%
b) 35%
c) 21.9%
d) 85-97%
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4. What is the content of Al₂O₃ in fly ash?
a) 30-60%
b) 15-30%
c) Up to 30%
d) 1-7%
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5. The property of a material that resists penetration or indentation by means of abrasion or scratching is known as ____________
a) Strength
b) Hardness
c) Stiffness
d) Toughness
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6. During compression test of cast iron, the failure occurs i.e. the crack appears along the __________
a) Diagonal
b) Surface parallel to load applied
c) Surface perpendicular to load applied
d) Lateral
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7. It opens the area of improvement for quality construction rationally based on the documents from ___________ projects.
a) Previous
b) Next
c) Later
d) Future
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Sanfoundry Global Education & Learning Series – Concrete Technology.

To practice MCQs on all areas of Concrete Technology, here is complete set of 1000+ Multiple Choice Questions and Answers.