Concrete Technology MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Concrete Technology, a fundamental topic in the field of Civil Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Concrete Technology MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Concrete Technology mcq questions that explore various aspects of Concrete Technology problems. Each MCQ is crafted to challenge your understanding of Concrete Technology principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Civil Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Concrete Technology MCQs are your pathway to success in mastering this essential Civil Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Concrete Technology. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Concrete Technology knowledge to the test? Let's get started with our carefully curated MCQs!

Concrete Technology MCQs | Page 18 of 24

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Q171.
Gypsum is added for

a.

colour

b.

strength

c.

controlling setting time

d.

none of these.

Discuss
Answer: (c).controlling setting time
Q172.
A concrete having a slump of 6.5 cm, is said to be

a.

dry

b.

earth moist

c.

semi-plastic

d.

plastic

Discuss
Answer: (d).plastic
Q173.
Strength of concrete with passage of time

a.

increases

b.

decreases

c.

fluctuates

d.

remains constant.

Discuss
Answer: (a).increases
Q174.
According to IS : 382-1963, a good aggregate should be

a.

chemically inert

b.

sufficiently strong

c.

hard and durable

d.

all the above.

Discuss
Answer: (d).all the above.
Q175.
The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

a.

between 150 to 300 kg/cm²

b.

between 350 to 600 kg/cm²

c.

between 150 to 500 kg/cm²

d.

below 200 kg/cm²

Discuss
Answer: (d).below 200 kg/cm²
Q176.
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

a.

0.1P + 0.3Y + 0.1Z = W/C x P

b.

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

c.

0.4P + 0.2Y + 0.01Z = W/C x P

d.

0.5P + 0.3Y + 0.01Z = W/C x P

Discuss
Answer: (b).0.3P + 0.1Y + 0.01Z = W/C x P
Q177.
For the construction of thin R.C.C. structures, the type of cement to be avoided, is

a.

ordinary Portland cement

b.

rapid hardening cement

c.

low heat cement

d.

blast furnace slag cement

Discuss
Answer: (d).blast furnace slag cement
Q178.
Vicat apparatus is used for

a.

fineness test

b.

consistency test

c.

test for setting time

d.

test for tensile strength

Discuss
Answer: (b).consistency test
Q179.
Concrete gains strength due to

a.

chemical reaction of cement with sand and coarse aggregates

b.

evaporation of water from concrete

c.

hydration of cement

d.

All the above.

Discuss
Answer: (c).hydration of cement
Q180.
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

a.

20.5 mm

b.

30.5 mm

c.

40.5 mm

d.

50.5 mm

Discuss
Answer: (c).40.5 mm
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