Q. Which of the following is incorrect regarding Cement concrete sewers?

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Q. The crown corrosion takes place due to formation of __________

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Q. The cement concrete sewers are lined with vitrified clay lining to prevent __________

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Q. Which of the following method is not used for treating crown corrosion?

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Q. Which of the following is incorrect regarding Stoneware sewer?

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Q. The range of diameter of cast iron sewer is __________

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Q. Identify the correct statement from the following regarding Cast iron sewer.

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Q. How many types of joints are present in the sewer?

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Q. The ratio of cement mortar used in Bell and spigot joint is?

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Q. The ratio of cement mortar used in the Collar joint is?

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Q. Which joint in the sewer is known as ring tie coupling?

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Q. In which sewer joint, bituminous compounds are added?

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Q. The type of joint used for metallic sewer is __________

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Q. Semi elliptical sections of sewer are not used nowadays.

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Q. _______ columns are used for the ventilation of sewer.

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Q. The diameter of the sewer is _____ the diameter of ventilating column.

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Q. Ventilating columns are provided at intervals of ______ along the sewer lines.

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Q. _______ is used to remove the waste directly from the building.

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Q. Which of the following is called as a ventilated discharge pipe?

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Q. Which gas among the following is not produced in the sewer?

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