The Halpha observation of the Wolf-Rayet (WR) galaxy Mrk~996 using the newly installed 1.3 meter Devasthal Fast Optical Telescope (DFOT) are presented. Mrk~996 is a well studied galaxy, however, Ha flux and star formation rate (SFR) in the galaxy are poorly constrained by different investigators over a range of 0.2 - 3.8 ~M_sun/yr. It is classified as nE, blue
compact dwarf galaxy with extremely dense gas in the core. The H-alpha analysis presented here is corrected for line contamination, Milky-way extinction,
internal extinction, stellar continuum and the underlying stellar absorption. The age of the star-burst is estimated as $8 Myr. It is also noticed that the ionized gas as traced by the Ha emission is in a disk shape, which is misaligned with respect to
the old stellar disk. This misalignment is indicative of a recent tidal interaction in the galaxy. We believe that the galaxy-galaxy tidal interaction is the main cause of the WR phase in Mrk~996.