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.

Question No : 15
Curing a concrete for long period ensures better

Volume stability

Strength

Water resistance

All the above

Question No : 16
Gypsum is added for

Colour

Strength

Controlling setting time

None of these

Question No : 17
The percentage of voids in cement is approximately

25 %

40 %

60 %

80 %

Question No : 18
To obtain a very high strength concrete, use very fine grained

Granite

Magnetite

Barite

Volcanic scoria

Question No : 19
Proper proportioning of concrete, ensures

Desired strength and workability

Desired durability

Water tightness of the structure

All the above

Question No : 20
Pick up the correct statement from the following:

The quality of water governs the strength of concrete

10% excess of water reduces the strength of concrete by 15%

30% excess of water reduces the strength of concrete by 50%

All the above

Question No : 21
Pick up the correct statement from the following:

Higher workability indicates unexpected increase in the moisture content

Higher workability indicates deficiency of sand

If the concrete mix is dry, the slump is zero

All the above