The dilution ratio at which the odour is hardly detectable is generally called threshold odour number and for public supplies it should not exceed

Related MCQs

• Maximum threshold number permitted for indicating the odour of public water supplies, is
• No treatment of the sewage is given if dilution factor is
• A nuisance is experienced in diluting water if dilution factor is less than
• The maximum permissible hardness for public supplies is
• The maximum permissible nitrites in public water supplies, is
• The maximum permissible colour for domestic supplies based on cobalt scale, is
• The coagulant which is generally not used for treating the sewage, is
• The intake opening is generally covered by a screen to prevent entry of debris etc. and its level is kept
• The best process of disinfection of public water supply, is by
• Hard water for public water supply is discarded because