Q. What is the water from urinals called?

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Q. What is the minimum diameter of the pipe used to collect black water?

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Q. What is the recommended slope ratio for soil water pipes?

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Q. Grease should not be allowed to enter the normal drainage system.

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Q. _______ is used to clean blockage in the line.

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Q. What is the shape of the septic tank?

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Q. What is the percentage of purification of septic tank effluent?

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Q. ________ should not be placed near water body.

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Q. The wastewater which does not contain sewage is known as _______

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Q. What are the masonry chambers constructed at suitable intervals along sewer lines called?

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Q. House drainage should be laid by the side of the building.

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Q. The house sewer should always be _______

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Q. Rain water from roofs can be allowed to flow through the house sewers.

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Q. Which of these is not an important component of house drainage system?

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Q. How many traps are present based on the shape?

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Q. What is the size of rain water pipe?

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Q. H₂S is intoxicant in nature.

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Q. _______ corrodes internal walls of sewers.

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Q. H₂S gas is denser than air.

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Q. H₂S gas is _______ to generate sulphuric acid.

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