Q. What is the specific gravity of Anthracite used in a dual media filter?

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Q. In which of the following filter, two layers filtering media is provided for filtration?

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Q. What is the size of sand used in a dual media filter?

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Q. The coarser layer used in a dual media filter is of __________

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Q. The thickness of Anthracite used in dual media filter is __________

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Q. How the performance of the rapid sand filter can be improved?

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Q. The size of Anthracite used in dual media filter is __________

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Q. In mixed media filter, the filtration is done from ______

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Q. What is the ratio in which coal, sand and garnet are present in the mixed media filter?

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Q. Which of the following order is correct regarding the specific gravity of the materials used in the mixed media filter?

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Q. Which of the following order is correct regarding the thickness of layer of the materials used in the mixed media filter?

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Q. Which of the following is the best filter in terms of rate of filtration?

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Q. In which type of filter, water flows in upward direction?

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Q. The up flow filter is used in domestic water supply.

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Q. In which type of filter, the filtration is done in two opposite directions at the same time?

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Q. Which material is provided for the down-flow bed in dual media bi-flow filter?

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Q. The rate of filtration of a Micro-Strainer is __________ litres / hour.

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Q. Which material is provided for the up flow bed in dual media bi-flow filter?

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Q. Which device is used for screening stored water which do not contain microscopic sized particles?

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Q. What is the diameter of drum of a Micro-Strainer?

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