Q1: The non-clog pump which permits solid matter to pass out with the liquid sewage, is

ANS:A - centrifugal pump

The non-clog pump that permits solid matter to pass out with the liquid sewage is typically a centrifugal pump. Centrifugal pumps are commonly used in sewage applications because they can handle solids present in the sewage without clogging. These pumps work by using centrifugal force to move liquid through the pump and out of the discharge outlet. The design of centrifugal pumps allows them to handle solid particles of varying sizes, making them suitable for sewage systems where solids may be present. Reciprocating pumps, on the other hand, are not typically used for sewage applications because they are more prone to clogging and may have difficulty handling solid particles. Pneumatic ejectors are used for different purposes and are not specifically designed for handling sewage with solids. Therefore, the correct option is centrifugal pump.