Q. Concrete is unsuitable for compaction by a vibrator if it is

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Q. Inert material of a cement concrete mix, is

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Q. Sands of zone I are

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Q. The lower water cement ratio in concrete, introduces

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Q. The cement becomes useless if its absorbed moisture content exceeds

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Q. The bulk density of aggregates, depends upon

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Q. Pick up the correct statement from the following:

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Q. Horizontal construction joints in concrete walls are generally provided at

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Q. Pick up the correct statement from the following:

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Q. For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is

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Q. Pick up the incorrect statement from the following:

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Q. Sand generally contains salt if it is obtained from:

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Q. The impurity of mixing water which affects the setting time and strength of concrete, is

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Q. Pick up the correct statement from the following:

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Q. Di-calcium silicate (C₂S)

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Q. A concrete using an air entrained cement

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Q. Pick up the correct statement from the following:

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Q. Placing of concrete should preferably be done at a temperature of

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Q. The aggregate impact value of the aggregate used in

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Q. The maximum percentage of chemical ingredient of cement is that of

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