The pharmaceutical business may be broadly classified as either bulk medication or intermediate or final pharmaceutical formulation manufacture. Both of these sub-industries within the pharmaceutical sector include a number of different unit operations that carry out a wide range of routine tasks. Any personnel involved in these processes should be well-versed in unit operations in order to carry them out effectively. Since, it comes under the healthcare industry, the pharmaceutical industry is one the biggest industry in the world with a revenue generated of 1.42 trillion US Dollars per annum (2021). The size of the industry is gigantic and naturally for operationalization of an industry of this volume, some processes and mechanism need to be implanted in the production. In the manufacturing of bulk drug the need of implementing effective methods and machinery with a standard procedure is of prime importance, and for this reason the pharmaceutical engineering is necessary.