Q. A rainfall may be classified as acidic if its pH value is less or equal to

View solution

Q. When drainage to sewage ratio is 20, the peak dry weather flow is

View solution

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

View solution

Q. Clogging of sewers, is caused due to

View solution

Q. A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is

View solution

Q. The coagulant widely used for sewage treatment, is

View solution

Q. House connections to the laterals is generally made by

View solution

Q. The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is

View solution

Q. Dilution method of disposing off sewage, is not preferred to

View solution

Q. For house drainage minimum gradient is

View solution

Q. If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is

View solution

Q. The ratio of minimum hourly flow to the average flow of sewage is

View solution

Q. Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to

View solution

Q. The sewage is pumped up

View solution

Q. Removal of oil and grease from sewage, is known

View solution

Q. The gas which may cause explosion in sewers, is

View solution

Q. In sewers the effect of scouring is more on

View solution

Q. If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

View solution

Q. Pick up the correct statement from the following :

View solution

Q. The non-clog pump which permits solid matter to pass out with the liquid sewage, is

View solution