Which of the following is not a water borne disease? Typhoid Cholera Dysentery Malaria TRUE ANSWER : ? YOUR ANSWER : ?
The velocity of flow does not depend on Roughness of sewer Hydraulic mean depth of sewer Length of sewer Grade of sewer TRUE ANSWER : ? YOUR ANSWER : ?
The pathogens can be killed by Nitrification Oxidation Chlorination None of these TRUE ANSWER : ? YOUR ANSWER : ?
The layout of distribution system in which water flows towards the outer periphery is Dead end system Grid iron system Ring system Radial system TRUE ANSWER : ? YOUR ANSWER : ?
When there is no recirculation of sewage, then recirculation factor is None of these Infinity 1 TRUE ANSWER : ? YOUR ANSWER : ?
The suitable layout of a distribution system for irregularly growing town is Dead end system Ring system Radial system Grid iron system TRUE ANSWER : ? YOUR ANSWER : ?
The major disadvantage of lime soda process of water softening is that The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water TRUE ANSWER : ? YOUR ANSWER : ?
The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is Separate system Partially separate system Combined system Partially combined system TRUE ANSWER : ? YOUR ANSWER : ?
Orthotolidine test is used for determination of Dissolved oxygen Biochemical oxygen demand Dose of coagulant Residual chlorine TRUE ANSWER : ? YOUR ANSWER : ?
The chemical most commonly used to increase speed of sedimentation of sewage is Sulphuric acid Copper sulphate Sodium permanganate Lime TRUE ANSWER : ? YOUR ANSWER : ?