Concrete Technology Mock Test 2

10%

Question 1 of 10

1. What is the approx amount of silica is present in cement?

60-67%

.1-4%

17-25%

3-8%

Question 1 of 10

Question 2 of 10

2. In cement hardening process ___________ instants are very important.

Question 2 of 10

Question 3 of 10

3. C₄AF is not a true compound.

False

True

Question 3 of 10

Question 4 of 10

4. Which type of aggregate is shown below?

Angular aggregate

Irregular or partially aggregate

Flaky aggregate

Rounded aggregate

Question 4 of 10

Question 5 of 10

5. Which apparatus we need to find soundness?

CTM

Vicat’s apparatus

Le Chatelier

Pat test

Question 5 of 10

Question 6 of 10

6. Final setting time of cement should not be more than _______

10 hours

2 hours

1 hour

5 hours

Question 6 of 10

Question 7 of 10

7. What do you mean by bulking?

Fine aggregate shows completely realistic volume

The state of setting someone or something apart from others

The volume increase of fine aggregate due to presence of moisture content in it

The moisture present in aggregate forms a film around each particle

Question 7 of 10

Question 8 of 10

8. Initial setting time of OPC should not be less than ___________

1 hour

30 minutes

28 minutes

15 minutes

Question 8 of 10

Question 9 of 10

9. Portland cement is composed of four major oxides (CaO, SiO₂, Al₂O₃, Fe₂O₃ ≥90%).

True

False

Question 9 of 10

Question 10 of 10

10. What is the standard value of expansion for super sulphated cement?

.5mm

5mm

1mm

10mm

Question 10 of 10