The finely divided dispersion of solid particles which are not visible to the naked eye and cannot be removed by ordinary filters are known as

Related MCQs

• Rapid sand filters are cheap and economical as compared to slow sand filters.
• The effective size of sand particles for rapid sand filters varies from
• The effective size of sand particles for slow sand filters varies from
• Pressure filters are not used for treating municipal water supplies, because
• Rpid sand filters are suitable for small towns and villages.
• Cleaning of rapid sand filters is done by
• The coefficient of uniformity for slow sand filters is
• Water is forced at a preseure higher than the atmospheric pressure in rapid gravity filters.
• Pressure filters are best suited for
• In presure filters, water is forced at a pressure