1. The distillation column shown in the drawing is used to distill a binary mixture.
2. 

In this distillation column, the base current flow rate (B) is controlled by receiving signals from the reboiler liquid level, the distillation feeding flow rate is controlled by receiving a signal at the riflax flow rate and the heater steam flow rate given to the reboiler by receiving the signal from the condenser output flow rate is controlled. Place the controllers on the physical diagram and draw a feedback control block diagram of any of the proposed control.