He completed his MA in Applied Linguistics from the University of Hyderabad (India) in 2004. In 2005, he moved to the University of Tübingen in Germany to pursue doctoral research in Linguistics under the supervision of Prof. Hubert Truckenbrodt and received his doctoral degree in 2009. His doctoral research is in the area of Optimality Theory (Phonology) and Distributed Morphology and with a focus on the syllable structure of Bangla. Later, Dr. Kar worked on the phonology of a group of Tibeto-Burman languages of Sikkim as part of his post-doctoral research at CIIL, Mysore, India.