Q. 1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m².

View solution

Q. What will be the surface area of the basin for a flow of 2*10⁶ litre per day having a surface loading rate 10,000 litre/day/m²?

View solution

Q. The detention period of the vertical flow clarifier is _______

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. The chemical composition of Alum is _____________

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. Why Alum is preferred over other coagulants?

View solution

Q. The chemical composition of Chlorinated Copperas is __________

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution