SSC JE CE Quiz_Concrete Technology Booster Quiz-9 for AE & JE Exams Exams

Question 1

Consider the following statements: A good soil for making bricks should contain
1) 30% alumina
2) 10% lime nodules
3) Only small quantity of iron oxides
4) 15% magnesia
Which of the above statements are correct?

Question 2

If aggregate size of 50-40 mm is to be tested for determining the proportion of elongated aggregates, the slot length of the gauge should
be

Question 3

Consider the following statements:
Cement concrete is a/an
1) Elastic material
2) Bingham-plastic material
3) Visco-plastic material
Which of these statement is/are correct?

Question 4

Consider the following statements :
Curing of concrete is necessary because
1) Concrete needs more water for chemical reaction
2) It is necessary to protect the water initially mixed in concrete from being lost during evaporation
3) Penetration of surrounding water increases the strength of concrete
Which of these statements is/are correct?

Question 5

What is the percentage of the fine aggregate of fineness modulus 2.6 to be combined with coarse aggregate of fineness modulus 6.8 for obtaining combined aggregate of fineness modulus 5.4?

Question 6

Which factors comprise maturity of concrete?

Question 7

Consider the following statements:
Entrainment of air in concrete is done so as to
1) Increase the workability.
2) Increase the strength.
3) Increase the resistance to freezing and thawing.
Which of these statements is/are correct?

Question 8

For different concrete specimens, each hydrated to the same degree, the permeability is

Question 9

Consider the following statements:

1) Fresh concrete behaves like a Non–Newtonian fluid.

2) UPV method is a non–destructive testing method for concrete, and it is used to determine the compressive strength of concrete.

3) Permeability of concrete increases by adding fly ash to cement.

Which of the above statements is/are INCORRECT?

Question 10

Which is/are correct measure to be taken while concreting is adopted in sub–zero temperature?

1). Admixtures of anti–freezing materials

2). Selection of suitable type of cement

3). Use of air–entraining agents

4). Economic heating of materials of concrete.