Q. Efflorescence in cement is caused due to an excess of

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Q. Pick up the correct statement from the following:

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Q. Joints in concrete structures, are provided

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Q. If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer of 150 litre capacity, is

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Q. The condition not applicable to water cement ratio law, is

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Q. High temperature

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Q. The factor which affects workability, is

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Q. The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as

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Q. Pick up the correct statement from the following:

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Q. Pick up the correct statement from the following:

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Q. Pick up the incorrect statement applicable to the field test of good cement.

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Q. If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed

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Q. The diameter of the Vicat plunger is 10 mm and its length varies from

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Q. The shrinkage of concrete

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Q. The ratio of various ingredients (cement, sand, aggregates) in concrete of grade M 200, is

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Q. Separation of water or water sand cement from a freshly concrete, is known

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Q. Pick up the incorrect statemnt from the following. For performing compressive strength test of cement

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Q. For concreting tunnel linings, tran-portation of concrete is done by

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Q. The operation of removing humps and hollows of uniform concrete surface, is known as

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Q. The void ratio of

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