[5] It has the following objectives:[6] The Molecular Biotechnology Unit (previously called the Biotechnology Unit) started research at DNA level in 2002 with molecular diagnosis of Citrus Huanglongbing (HLB) disease; commonly known as Citrus Greening Disease.

The major programs of the unit are: The objective is to investigate methods of pollution control, conduct climatological and meteorological studies and provide an analytical service for the quality analysis of water.

Program and achievements; [8] The Physical Science Unit consists of the following fields of research: Nepal has 6500 species of flowering plants.

Ten volumes of the Nepal Flora have been scheduled to publish by 2020 in digital and printed book version.

[14] The Small Hydro Power program was initiated from the fiscal year 2071/72 at NAST under the Faculty of Technology.