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Civil Engineering Objective Questions { Building Construction }



50. For construction of structures under water, the type of lime used, is
A. hydraulic lime
B. fat lime
C. quick lime
D. pure lime

51.  Pozzolana (or surkhi) is used in lime
A. to impart hydraulicity
B. to prevent shrinkage
C. to decrease the cost of construction
D. to decrease the setting time.

52.  Pick up the correct statement from the following :
A. Quick lime is obtained by burning pure lime stone
B. Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
C. Poor lime is obtained by burning lime stone containing impurities more than 5%.
D. All the above.

53. Slacking of lime is affected by
A. keeping it exposed to air
B. immersing the lime in water
C. crushing the lime lumps
D. none of these.

54.  Lime mortar is generally made with
A. quick lime
B. fat lime
C. hydraulic lime
D. plain lime

55.  The commonly used lime in white-washing, is
A. white lime
B. fat lime
C. hydraulic lime
D. lime

56.  Lime concrete is generally used for
A. wall foundations
B. flooring at ground level
C. both (a) and (b)
D. neither (a) nor (b).

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