Pressure filters are not used for treating municipal water supplies, because

Related MCQs

• Rapid sand filters are cheap and economical as compared to slow sand filters.
• Water is forced at a preseure higher than the atmospheric pressure in rapid gravity filters.
• In presure filters, water is forced at a pressure
• Pressure filters are best suited for
• When the chlorine is added beyond the break point, the process of treating the water is known as
• Plain chlorination is adopted for treating the water having turbidities less than 20 to 30 ppm.
• The maximum permissible chloride content in water for domestic supplies should not exceed
• The maximum permissible fluorine content in water for domestic supplies should be
• The pH value of water for public supplies is limited from
• The maximum permissible quantity of lead in water for domestic supplies is