Q1: The purpose of providing bleed points in the evaporator is to

ANS:C - facilitate removal of non-condensable gases

The purpose of providing bleed points in the evaporator is to facilitate the removal of non-condensable gases. During the evaporation process, especially in systems where volatile substances are being evaporated, non-condensable gases may accumulate. These gases can interfere with the efficiency of the evaporation process by occupying space in the evaporator and reducing the effective surface area available for heat transfer. By providing bleed points in the evaporator, these non-condensable gases can be safely removed from the system. This helps to maintain optimal operating conditions within the evaporator, ensuring efficient heat transfer and maximizing the performance of the equipment.