“The Effect of Exothermic Reaction Associated With Activation Energy in Hydromagnetic Convection Heat Transfer Flow of Water Based (MoS2 – SiO2 H2O) Hybrid Nanofluid through a Cylindrical Annulus With Variable Viscosity: Darcy-Forchheimer Model”. 2026. Indian Journal of Biochemistry and Biophysics (IJBB) 63 (4): 453-68. https://doi.org/10.56042/ijbb.v63i4.22123.