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Civil Engineering Objective Questions { Building Construction }

78.  The percentage of water for normal consistency, is
A. 5% to 15%
B. 10% to 25%
C. 15% to 25%
D. 20% to 30%

79.  If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is
A. 0.70 P
B. 0.75 P
C. 0.80 P
D. 0.85 P

80. Soundness of cement is tested by
A. Vicat's apparatus
B. Le-chatelier apparatus
C. compressive strength testing apparatus
D. none of the these.

81.  Soundness test of cement determines
A. quality of free lime
B. ultimate strength
C. durability
D. initial setting

82. With storage, strength of cement
A. increases
B. decreases
C. remains the same
D. none to these.

83. In a mortar, the binding material is
A. cement
B. sand
C. surkhi
D. cinder.

84.  Good quality sand is never obtained from
A. river
B. nala
C. sea
D. gravel powder.

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