Q. According to I.S. : 456, the number of grades of concrete mixes, is

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Q. The mixture of different ingredients of cement, is burnt at

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Q. The risk of segregation is more for

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Q. After casting, an ordinary cement concrete on drying

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Q. Hydration of cement is due to chemical action of water with

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Q. To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between

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Q. Permissible compressive strength of M 300 concrete grade is

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Q. The standard sand now a days used in India, is obtained from

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Q. To ensure constant moisture content in aggregates

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Q. Workability improved by adding

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Q. The commonly used material in the manufacture of cement is

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Q. If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

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Q. Curing a concrete for long period ensures better

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Q. For the construction of cement concrete floor, the maximum permissible size of aggregate, is

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Q. The process of proper and accurate measurement of concrete ingredients for uniformity of proportion, is known

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Q. Pick up the correct statement from the following:

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Q. The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds

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Q. Pick up the correct proportions of chemical ingredients of cement

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Q. Transport of concrete by pumps, is done for a distance of

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Q. Slump test is done for

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