1. Process of keeping Concrete moist for certain period after casting is ?
                  a.         Finishing of Concrete
                  b.        Curing of Concrete
                  c.        Placing of Concrete
                  d.        None of the above
Curing of Concrete
2. Weight of reinforcement concrete in kg/m3 is ?
                  a. 1500
                  b. 1600
                  c. 2000
                  d. 2400
2400
3. Slump test of Concrete used to test ?
                  a.         Workability
                  b.         Durability
                  c.         Strength
                  d.         Water Content
Workability
4. Value of Concrete Cube strength is given at ?
                  a.         1 Day
                  b.         8 Days
                  c.         28 Days
                  d.         35 Days
28 Days
5. Why steel is used as reinforcement in Reinforced Concrete ?
                  a.         Good bond to concrete
                  b.         Easily available
                  c.         Coefficient of thermal expansion is same for steel and concrete
                  d.         All of the above
All of the above Â
6. If water required for 1bag of cement is 30liters,W/C ratio is ?
                  a.         0.4
                  b.         0.5
                  c.         0.6
                  d.         None of the above
 0.6
7. Admixtures are used in Concrete for ?
                  1.         Increasing strength of concrete
                  2.         Reduce heat of concrete
                  3.         To increase workability of concrete
                  4.         Increase air content
   a.   1 & 2
   b.    2 & 3
   c.    3 & 4
   d.    All of the above
All of the above
8. Strength of concrete depends on ?
                  a.         Quality of water
                  b.         Quality of aggregates
                  c.         Quantity of cement
                  d.         W/C ratio
                  e.         All of the aboveÂ
All of the above
9. How many slump layers of concrete are required in slump test ?
                  a.         4 layers
                  b.         2 layers
                  c.         3 layers
                  d.         7 layers
3 layers Â
10. Air entrained concrete is used in lining walls and roofs to make them ?
                  a.         Heat insulated
                  b.         Sound insulated
                  c.         None of the above
                  d.         A & B
A & BÂ
11. Soundness of concrete is tested by ?
                  a.         Vicat’s apparatus
                  b.         Le-chatelier apparatus
                  c.         Compressive strength testing apparatus
                  d.         None of the above
Le-chatelier apparatus
12. Concrete hydration means ?
                  a.         Reaction between cement and water
                  b.         Curing of concrete
                  c.         Setting of concrete
                  d.         All of the above
All of the above
13. segregation of water from freshly concrete known as ?
                  a.         Bleeding
                  b.         Creeping
                  c.         Segregation
                  d.         Flooding
 Bleeding
14. Last component that is added to Cement production process is ?
                  a.         Silica
                  b.         Alumina
                  c.         Calcium Sulphate (Gypsum)
                  d.         None of the above
Calcium Sulphate (Gypsum)
15. What is the common yield strength of reinforcement steel ?
                  a.         100 MPa
                  b.         200 MPa
                  c.         275 MPa
                  d.         460 MPa
460 MPa
16. Ultra – Sonic testing of concrete is ?
                   1.         Non-Destructive test
                  2.         Used on smooth concrete surfaces
                  3.         A destructive test
                  4.         Used for soil testing Choose the answer
   a. 1 & 2
   b. 3 only
   c. 3 & 4
   d. All of the above
All of the above
17. Consider the following statements: Shrinkage of concrete depends on ?
                  1.         Relative humidity of the atmosphere
                  2.         Passage of time
                  3.         Applied stress
                  4.         Choose the answer
   a. 1 & 2
   b. 2 & 3
   c. 1, 2 & 3
   d. 3
 1, 2 & 3
18. What is the meaning of concrete hydration ? Choose the best answer
                  a.         The reaction between cement & waterÂ
                  b.         Curing of concrete
                  c.         Setting of concrete
                  d.         All of the above
The reaction between cement & water (best answer)
19. What is poison’s ratio for normal concrete ?
                  a.         0.2
                  b.         0.3
                  c.         0.4
                  d.         0.5
0.2
20. What is concrete density ?
                  a.         2.4
                  b.         3.0
                  c.         2.7
                  d.         None of the above
 2.4Â
21. Ultimate strength to cement is provided by ?
                  a.         Tri calcium silicate.
                  b.         Di-calcium silicate.
                  c.         Tri-calcium aluminate.
                  d.         Tetra calcium alumina ferrite.
Di-calcium silicate
 22. In the cement the compound quickest to react with water is ?
                  a.         Tri calcium aluminate.
                  b.         Tetra-calcium alumina-ferrite.
                  c.         Tri- calcium silicate.
                  d.         Di- calcium silicates
 Tri calcium aluminate.
23. For the manufacture of Portland cement, the proportions of raw materials used are ?
                  a.         Lime63%; silica 22%; other ingredients15%
                  b.         Lime22%; silica 63%; other ingredients 15%
                  c.         Silica 40%; lime40%; other ingredients 20%
                  d.         Silica 70%; lime20%; other ingredients 10%.
lime63%; silica 22%; other ingredients15%
24. Asbestos cement ?
                  a.         Is brittle
                  b.         Warps due to changes in humidity
                  c.         Strength is lowered when saturated by water.
                  d.         All of the above.
Is brittleÂ