A Best Way To Crack Gorenment Job Exams

Civil Engineering Objective Questions { Building Materials }



57.  Lime putty
A. is made from hydraulic lime
B. is made by adding lime to water
C. can be used only upto three days
D. all of above.

58. Pick up the correct statement from the following :
A. Slaked lime contains calciuin hydroxide
B. Quick lime contains calcium:oxide
C. Slaked lime may be obtained from quick lime
D. All the above.

59. Quick lime
A. generates heat when added to water
B. reacts with carbon dioxide
C. may be used for white-washing
D. all the above.

60.  The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
A.20
B.15
C.10
D.0

61.  The initial setting time of hydraulic lime, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes

62. The initial setting time of lime-pozzolona, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes.

63. The normal curing period for lime mortar, is :
A. one day
B. 3 days
C. 7 days
D. 10 days

Page 9 of 51

« 7 8  9  1011 »

Subjects