Q. 21 You are asked to construct a massive dam, the type of cement you will use, is
A. Low heat cement
B. Blast furnace slag cement
C. Ordinary Portland cement
D. Rapid hardening cement
A. Low heat cement
Q. 22 An ideal ware house, is provided
A. Water proof roof
B. Few windows which remain generally closed
C. Water proof masonry walls
D. All the above
D. All the above
Q. 23 Normally pre-stressing wires are arranged in the
A. Lower part of the beam
B. Center
C. Upper part of the beam
D. Anywhere
A. Lower part of the beam
Q. 24 Pick up the correct statement from the following:
A. Fine sand bulks more than coarse sand
B.
B. The volume of fully saturated sand, is equal to the volume of dry and loose sand
C. Bulking of sand is caused due to formation of a thin film of surface moisture
D. All the above
D. All the above
Q. 25 The minimum percentage of chemical ingredient of cement is that of
A. Lime
B. Magnesium oxide
C. Iron oxide
D. Alumina
B. Magnesium oxide
Poisson’s ratio for concrete
A. Decreases with richer mixes
B. Remains constant
C. Increases with richer mixes
D. None of the above
C. Increases with richer mixes
Q. 27 Shrinkage in concrete can be reduced by using
A. Proper concrete mix
B. Low water cement ratio
C. Less cement in the concrete
D. All the above
B. Fat lime
Q. 28 The shuttering of a hall measuring 4 m × 5 m, can be removed after
A. 14 days
B. 5 days
C. 7 days
D. 10 days
C. 7 days
Q. 29 The approximate value of the ratio between direct tensile strength and flexural strength is
A. 0.33
B. 0.5
C. 0.75
D. 1.0
B. 0.5
Q. 30 An aggregate is said to be flaky if its least dimension is less than
A. 4/5th of mean dimension
B. 1/5th of mean dimension
C. 2/5th of mean dimension
D. 3/5th of mean dimension
D. 3/5th of mean dimension
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