The minimum velocity of flow in sewers should be about

The drop manholes are generally provided in sewers for

Which of the following would help prevent escape of foul sewer gases from water closet?

Sewer pipes are made of.

The equipment used for removing paper and rags from sewers is called

A sanitary sewer is expected to run

The trap which is provided to disconnect the house drain from the street sewer is called

The suitable cross-section of sewers to combined flow is

The lowest point of the interior of a sewer or drain at any cross section

Lagooning is the

In the design of storm sewers, time of concentration relevant of determine the

In biogas plant digestion(biological process) occurs in absence of

The solid or semi-solid waste from a house waste of food, peelings of vegetable, fruits etc is:

The detention period in a septic tank is:

A street sewer into which sewer from house connections pour,is called

Most common coagulant is:

Out of the following equipment........................is most suitable for the removal of gaseous pollutants:

Back washing of rapid gravity filters, may face rough weather, due to:

The process of killing pathogenic bacteria of water borne diseases to make it safe for use in hospital is called:

Which of the following has minimum detention period

The lowest point of the interior of a sewer or drain at any cross section is called:

According to Indian Standards, the dispersing solution used in sedimentation analysis, for the determination of particle size consists of:

Disinfection of swimming pool water is usually done by:

Which of these provide the working space for maintenance and inspection of sewer?

The organic impurities are converted into simple and harmless compounds due to:

Shallow ponds in which dissolved oxygen is present at are depth are called:

The organic loading in a trickling filter is measured in:

The septic tank should be cleaned at regular intervals but should not exceed:

In treating swimming pool, water the filtration system to be used IS

Sewer preferred for combined system of sewage is:

The most suitable section of a sewer in a separate sewerage system is:

The organic impurities in water form a layer on the top of the filtering media. Such a layer called:

The organic impurities in water from a layer on the top of filtering media. Such a layer is

For treating the sewage of a large city, you will recommend

In which type of settling, sedimentation of discrete particles takes place?

The detention period in coagulation tanks is usually kept as:

Self Purification of running water in streams may be due to

The self cleaning velocity of the sewers is:

The means of access for inspection and cleaning of sewer line is known as:

Which of the following sewer appurtenances discharge the excess sewage flow to relief sewer?

A pipe which is installed in house drainage to preserve water seal is known as ..............................

The sewer that unloads the sewage at the point of treatment is called....................

The growth of algae is useful in:

Slow sand filter is efficient to remove the bacteria from the raw water to an extend of:

High bacterial removal by slows and filter is accomplished by:

A clariflocculator is a:

The phenomenon by virtue of which a soil is clogged with sewage matter, is called:

The process of passing the water through beds of fine granular materials like sand is known as:

Removal of oil and grease from sewage is known as:

Which of the following would help prevent escape of foul sewer gases from water closet: