Admixtures and Construction Chemicals MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Admixtures and Construction Chemicals, a fundamental topic in the field of Concrete Technology. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Admixtures and Construction Chemicals 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 Admixtures and Construction Chemicals mcq questions that explore various aspects of Admixtures and Construction Chemicals problems. Each MCQ is crafted to challenge your understanding of Admixtures and Construction Chemicals principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Concrete Technology tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Admixtures and Construction Chemicals MCQs are your pathway to success in mastering this essential Concrete Technology topic.

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Admixtures and Construction Chemicals MCQs | Page 1 of 10

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Q1.
Which of the following statement is incorrect?

a.

Water is the most important and least expensive ingredient of concrete

b.

Excess of water forms scum

c.

Less amount of water may cause honeycombing

d.

Mixing of water is used in the hydration of cement and provides lubrication between fine and coarse aggregates.

Discuss
Answer: (c).Less amount of water may cause honeycombing
Q2.
Which of the following statement is incorrect for mixing water?

a.

Suspended particles of clay and slit < .02%

b.

The quality of CaCl₂ is restricted to 1.5%

c.

The pH value of water should be between 6-8

d.

Free vegetable oil is beneficial

Discuss
Answer: (d).Free vegetable oil is beneficial
Q3.
The vegetable oil if present in mixing for concrete __________

a.

Improves strength

b.

Reduces strength

c.

Gives more slump

d.

Gives a smooth surface

Discuss
Answer: (b).Reduces strength
Q4.
The mineral oil if present in mixing for concrete __________

a.

Improves strength

b.

Reduces strength

c.

Gives more slump

d.

Gives a smooth surface

Discuss
Answer: (a).Improves strength
Q5.
With regard to the curing water, identify the incorrect statement.

a.

Curing water shouldn’t produce objectionable stains on the surface

b.

The presence of tannic acid and iron compounds is objectionable

c.

Iron and organic matter are responsible for staining

d.

Water is suitable for mixing is also suitable for curing

Discuss
Answer: (c).Iron and organic matter are responsible for staining
Q6.
To neutralize 200 ml of sample should not require more than 10 ml of __________ normal HCI using methyl orange.

a.

1

b.

.1

c.

10

d.

.01

Discuss
Answer: (b)..1
Q7.
To neutralize 200 ml sample of water should not require more than _________ ml of 0.1 normal NaOH.

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Q8.
What is the permissible limits for construction of organic matter in water?

a.

200 mg/l

b.

2000 mg/l

c.

3000 mg/l

d.

500 mg/l

Discuss
Answer: (a).200 mg/l
Q9.
What is the permissible limits for construction of inorganic matter in water?

a.

200 mg/l

b.

2000 mg/l

c.

3000 mg/l

d.

500 mg/l

Discuss
Answer: (c).3000 mg/l
Q10.
What is the permissible limits for construction of suspended matter in water?

a.

200 mg/l

b.

2000 mg/l

c.

3000 mg/l

d.

500 mg/l

Discuss
Answer: (b).2000 mg/l
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