101. Grading of aggregates in a concrete mix is mainly essential to achieve
- adequate workability
- higher density
- reduction in voids
- better durability
102. The primary purpose of curing is to
- reduce the heat loss of concrete that is freshly placed in the atmosphere
- reduce the temperature gradient across the cross-section of the concrete
- both (a) and (b)
- neither (a) nor (b)
103. Which of the following are slump test indicators?
- True slump
- Shear slump
- Collapse slump
- All of the above
104. Presence of air bubbles in concrete
- shall increase the strength of the concrete
- shall reduce the strength of the concrete
- shall increase the strength of the concrete but make it brittle
- shall not affect the strength of the concrete
105. In construction terminology, what does SRC stand for?
- Sulphate Resistant Concrete
- Sand Resistant Concrete
- Sand Resistant Concrete
- Sand Resistant Cement
106. Segregation is
- separation of coarse aggregates from mortar during transportation
- separation of fine aggregates from mortar during transportation
- separation of all aggregates from mortar during transportation
- none of the above
107. Which of the following can be subjected to a Slump test?
- Sand
- Clay
- Concrete
- Lime
108. The higher the cohesiveness of concrete
- the lesser the chance of segregation
- the higher the chance of segregation
- the higher the chance of bleeding
- the lesser the chance of bleeding
109. The material that acts as the binding agent in mortar is
- surkhi
- sand
- cinder
- none of the above
110. Mortar is a paste made by mixing
- lime, surki and water
- lime, sand and water
- cement, sand and water
- all of these