**1. Introduction**

A nanoparticle of size under 100 nm deferred into a standard fluid is then named a nanofluid. The essentialness of a nanofluid is expected from its distinctive thermophysical qualities. Nanofluids show enormous capacity to lead power and heat, so they have a critical impact in industry. Nanoliquids have attracted extraordinary enthusiasm for their wide applications; for example, electronic chip cooling, hybrid powered machines, progressed atomic frameworks, solar liquid heating, microchips, excessively proficient magnets and optoelectronics. Thus, Choi [1] exhibited the term nanoparticle inundated into a standard fluid. Buongiorno [2] presented a mathematical model for heat transport in nanoliquid by considering the impacts of Brownian diffusion and thermophoretic dispersion. Further examinations on nanofluids can be seen through the attempts [3–28].

The flow due to a rotating disk plays vital roles in numerous mechanical processes, encompassing psychologist fits, rotors and flywheels. Recently rotating disks became very significant in thermal power creating frameworks, electric-control generation, stopping mechanisms, rotating sawing machines, etc. Fluid flow by a rotating disk is initiated by the Von Karman effect [29]. Turkyilmazoglu and Senel [30] explored the impacts of mass and heat transport because of the porous disk subject to rotating frame. Entropy generation in MHD flow by the rotation of porous disk subject to slip and variable properties is examined by Rashidi et al. [31]. Nanofluid flow because of revolution of disk is discussed by Turkyilmazoglu [32]. Hatami et al. [33] investigated the impacts of contracting rotating disk on nanofluids. They utilized least square technique for solution development. Mustafa et al. [34] analyzed three dimensional nanofluid flow over a stationary disk. Sheikholeslami et al. [35] constructed numerical solutions of nanofluid by a rotating surface. Micropolar liquid flow by a turning disk is explored by Doh and Muthtamilselvan [36]. Aziz et al. [37] provided a numerical report to nanofluid flow by rotation of disk subject to slip impacts and thermal absorption/generation. Third-grade nanofluid flow over a stretchable rotating surface with heat generation is examined by Hayat et al. [38]. Radiative flow in the presence of nanoparticles and gyrotactic microorganism by the variable-in-thickness surface of a pivoting disk is explained by Qayyum et al. [39]. Hayat et al. [40] provided a numerical solution for radiative flow of carbon nanotubes by the revolution of disk subject to partial slip.

The aim of the present paper is to generalize the analysis of study [11] into four directions. Firstly, to examine magnetohydrodynamic flow of viscous nanofluid due to the rotation of disk. Attention is mainly given to Brownian diffusion and thermophoresis. Secondly, to utilize thermal, concentration and velocity slips at the surface of rotating disk. Thirdly, to consider the effect of mixed convection. Fourth, to analyze the Arrhenius activation energy and binary chemical reaction. The resulting scientific framework is solved numerically via the shooting method. Concentration, temperature and Sherwood and Nusselt numbers are also explored via graphs.
