Q. The design value of surface loading for horizontal flow circular sedimentation is _______

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Q. Detention time for a circular tank is given by _______

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Q. The sedimentation basin should be made as deep as possible.

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Q. What is formed when coagulant is added to water?

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Q. The chemical composition of Alum is _____________

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Q. The chemical compound which is insoluble in water, formed when alum is added to water is _____________

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Q. Which gas is released when alum is added to water?

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Q. What indicates the permanent hardness when alum is added to water?

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Q. Alum is effective when pH of water is between ____

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Q. Why Alum is preferred over other coagulants?

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Q. The chemical composition of Chlorinated Copperas is __________

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Q. Ferric chloride is effective over a pH range of __________

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Q. Why Magnesium carbonate is not commonly preferred as coagulant?

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Q. Which of the following statement is wrong regarding Iron salt?

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Q. __________ is an operation designed to force agitation in the fluid and induce coagulation.

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Q. The rate of change of velocity per unit distance normal to a section is called_______

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Q. What is the dimension formula of mean velocity gradient?

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Q. What is the desirable value of mean velocity gradient in a flocculator?

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Q. What is the normal value of the detention period adopted in a flocculator for design purpose?

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Q. The design value of the velocity of flow in a flocculator is _______

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