The present study investigates the impact of aerosols on the intensity and raindrop size distribution of the tropical cyclone NIVAR, which formed over the Bay of Bengal (BoB). WRF-ARW model is used in this study. Thompson, Thompson AA, and Morrison AA schemes were used to simulate the model. The second domain was used in this study. IMD best track data was used to compare the SLP, MSW, and Tracks. AWS data was used to compare the simulated Rain Rate (RR). IMD GPM data was used to compare the simulated spatial distribution of accumulated rainfall. X-band radar data was used to understand the raindrop size distribution properties in the cyclone. All the simulations produced TC tracks that were similar to the observation. IMD track and simulations moving towards the northwest, around 18:00 to 19:00 UTC, crossed land at Tamil Nadu and Puducherry coast (12.1° N, 79.9° E). After crossing the land, the IMD track turned towards the north. Thompson and Thompson AA followed the IMD track after landfall, but Morrison and Morrison AA continued northwest. The SLP and MSW showed that the storm matured around 9:00 UTC on 25^th November and sustained up to 18:00 UTC on the same day. However, model simulations of the mature stage occurred around 12:00 UTC on the 25^th and started dissipating. Morrison AA scheme predicted the lowest SLP compared with all the simulations. A radius height cross section of horizontal temperature anomaly was generated to understand the existence of warm and cold cores. The warm core is vertically extended up to 15 Km from the ground. Among the four simulations, Thompson, followed by the Morrison AA scheme, produced the highest warming (5⁰ &ndash 10⁰ C) compared to Thompson AA (5⁰ &ndash 7⁰ C) and Morrison schemes (5⁰ &ndash 8⁰ C) in the core region. The strength of updrafts and down drafts plays a significant role in forming warm core. Azimuthally averaged radius height cross section to understand the warm core if Vertical velocity was drawn. Thompson AA and Morrison schemes predicted the most vigorous updrafts, and the Thompson scheme predicted the lowest updrafts. A radius height cross section of hydrometeors was drawn to understand the microphysical properties of TC in the simulations.