Try Model Set: Civil Engineer Model Set 6 : Smart Tayari

१. Segregation in concrete results in

honey combing
porous layers
surface scaling
all of these

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२. Volume of coarse aggregate required to make 100m3 of 1:2:4 concrete is

98 m3
84 m3
79 m3
72 m3

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३. The gypsum is added to the cement for

providing high strength to the cement
controlling the initial setting time of cement
lowering the initial setting time of cement
all of the above

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४. Efflorescence in cement is caused due to the excess of

silica
lime
alkalies
iron oxide

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५. The presence of tricalcium silicate in cement

hydrates the cement rapidly
generates less heat of hydration
offers high resistance to sulphate attack
all of these

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