ANS:A - centrifugal pump

The most widely used pump for lifting sewage is the centrifugal pump. Centrifugal pumps are commonly used in sewage lifting applications due to their efficiency, reliability, and ability to handle liquids containing solids and debris. These pumps work by using centrifugal force to propel sewage through the pump housing and out through the discharge pipe. Centrifugal pumps are preferred for sewage lifting because they can handle varying flow rates and pressures, making them suitable for a wide range of sewage pumping applications, including municipal wastewater systems, industrial processes, and drainage systems. Additionally, centrifugal pumps require minimal maintenance and are relatively cost-effective compared to other types of pumps.