Batch processes are very famous for their flexible operations for the production of fine and specialty chemicals. The economical operation of a batch process could only be possible if the required production is achieved in minimum time with efficient scheduling. Amongst all scheduling methods, sequencing is the most effective method to reduce the overall completion time that is known as makespan. Sequencing is the order in which raw materials are processed. To find a sequence with minimum makespan, the makespan for all the possible sequences has to be determined. The number of possible...