MCQ 16 The property of fresh concrete, in which the mix tends to rise to the surface while placing and compacting, is called

(A) Segregation (B) Bleeding (C) Bulking (D) Creep

MCQ 12 Select the incorrect statement

(A) Lean mixes bleed more as compared to rich ones. (B) Bleeding can be minimized by adding pozzuolana finer aggregate. (C) Bleeding can be increased by addition of calcium chloride. (D) None of the above

MCQ 6 The property of the ingredients to separate from each other while placing the concrete is called

(A) Segregation (B) Compaction (C) Shrinkage (D) Bulking

MCQ 13 Workability of concrete is directly proportional to

(A) Aggregate cement ratio (B) Time of transit (C) Grading of the aggregate (D) All of the above

MCQ 5 Workability of concrete is inversely proportional to

(A) Time of transit (B) Water-cement ratio (C) The air in the mix (D) Size of aggregate

MCQ 14 Strength of concrete increases with

(A) Increase in water-cement ratio (B) Increase in fitness of cement (C) Decrease in curing time (D) Decrease in size of aggregate

MCQ 7 The compressive strength of 100 mm cube as compared to 150 mm cube is always

(A) Less (B) More (C) Equal (D) None of above

MCQ 4 As compared to ordinary Portland cement, use of pozzuolanic cement

(A) Reduces workability (B) Increases bleeding (C) Increases shrinkage (D) Increases strength

MCQ 8 In order to obtain the best workability of concrete, the preferred shape of aggregate is

(A) Rounded (B) Elongated (C) angular (D) All of the above

MCQ 3 Bulking of sand is maximum if moisture content is about

(A) 2% (B) 4% (C) 6% (D) 10%

MCQ 11 1% of voids in a concrete mix would reduce its strength by about

(A) 5% (B) 10% (C) 15% (D) 20%

MCQ 9 For type reinforced concrete section, the shape of shear diagram is

(A) Wholly parabolic (B) Wholly rectangular (C) Parabolic above neutral axis and rectangle below neutral axis (D) Rectangular above neutral axis and parabolic below neutral axis

MCQ 2 Diagonal tension in a beam

(A) Is maximum at neutral axis (B) Decrease below the neutral axis and increases above the neutral axis (C) Increase below the neutral axis and decreases above the neutral axis (D) Remains same

MCQ 10 Lap length in compression shall not be less than

(A) 15φ (B) 20φ (C) 24φ (D) 30φ

MCQ 1 The minimum cover in a slab should neither be less than the diameter of bar nor less than

(A) 10mm (B) 15 mm (C) 25 mm (D) 13 mm