The Difference Graph of Power Graphs of Finite Groups,  Contributed talk at the International Conference on Recent Advances in Graph Theory and Allied Areas (ICRAGAA-2023), organised by Department of Mathematics, St. Aloysius College, Elthuruth, Thrissur, Kerala, 02-04 February 2023.

The Complement of Enhanced Power Graph of a Finite Group, Contributed talk at the International Conference on Graphs, Networks and Combinatorics (ICGNC-2023), organised by Department of Mathematics, Ramanujan, Delhi,  10-12 January 2023.

Commuting graph of an aperiodic Brandt semigroups, Contributed talk (virtual) at the International Conference on Graphs, Combinatorics and Optimization: ICGCO- 2022, Birla Institute of Technology and Science Pilani, Dubai, 6-8 February 2022

On the intersection ideal graph of semigroups, Contributed talk (virtual) at the International Conference on Number Theory and Discrete Mathematics: ICNTDM- 2020, organised by Ramanujan Mathematical Society and hosted by Rajagiri School of Engineering and Technology, 11-14 December 2020

On the structure of commuting graph of Brandt semigroups, Contributed talk at the International Conference on Semigroups and Applications: ICSAA-2019, Cochin University of Science and Technology, Cochin, India, 09-12 December, 2019

Clique number of the cyclic graph of infinite semigroup, Contributed talk at the International Conference on Number Theory and Graph Theory, University of Mysore, Mysuru, India, 27-29 June, 2019

On the Large rank of certain semigroup of transformation on a finite chain, Contributed talk at the International Conference on Algebra and its Applications: ICAA-2016, Aligarh Muslim University, Aligarh, 12-14 November, 2016

Rank properties of the semigroup of endomorphisms over Brandt semigroup, Contributed talk at the International Conference on Semigroups Algebras and Applications: ICSAA-2015, Cochin, India, 17-19 September 2015

Rank properties of certain semigroups, Seminar talk at Harish-Chandra Research Institute, Allahabad, India, July 21, 2015

Affine Near-Semiring over Brandt Semigroups, Seminar talk at Harish-Chandra Research Institute, Allahabad, India, 25 May, 2015

The Large Rank of the Semigroup of Order-Preserving Singular Maps, Con- tributed talk at the International Conference on Semigroups Algebras and Operator Theory: ICSAOT-2014, Cochin, India, 26-28 February 2014

On the Ranks of Additive Semigroup Reducts of Affine Near-Semirings over Brandt Semigroups, Contributed talk at the Conference General Algebra and Its Applications: GAIA 2013, Melbourne, Australia (Coauthored and presented by K. V. Krishna) 19 July 2013