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.Management Sciences
Category: Building Materials and Construction
Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth ?
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A. lime stone and alumina
B. silica and alkalies
C. alumina and iron
D. alkalies and magnesium
Proper amount of entrained air in concrete results in__________?
1. better workability
2. better resistance to freezing and thawing
3. lesser workability
4. less resistance to freezing and thawing The correct answer is:
A. (1) and (2)
B. (1)and(4)
C. ((2)and (3)
D. (3)and (4)
Minimum width of landing should be_______________?
A. equal to width of stairs
B. half the width of stairs
C. twice the width of stairs
D. one fourth the width of stairs
Which of the following metamorphic rocks has the most weather resisting characteristics ?
A. marble
B. quartzite
C. slate
D. lime stone
For testing compressive strength of cement, the size of cube used is_______________?
A. 50 mm
B. 70.6 mm
C. 100 mm
D. 150 mm
The main constituent which imparts hydraulicity to hydraulic lime is______________?
A. calcium oxide
B. silica
C. clay
D. water
Which of the following stresses is used for identifying the quality of structural steel ?
A. ultimate stress
B. yield stress
C. proof stress
D. none of the above
The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as______________?
A. quarrying of stones
B. blasting of stones
C. seasoning of stones
D. dressing of stones
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