Research Article Triple Solutions with Stability Analysis of MHD Mixed Convection Flow of Micropolar Nanofluid with Radiation Effect Hazoor Bux Lanjwani, 1 Muhammad Saleem Chandio, 1 M. Imran Anwar, 2 Amnah S. Al-Johani, 3 Ilyas Khan , 4 and Md. Nur Alam 5 1 University of Sindh, Jamshoro, Pakistan 2 University of Sargodha, Pakistan 3 Mathematics Department, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia 4 Department of Mathematics, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia 5 Department of Mathematics, Pabna University of Science & Technology, Pabna-6600, Bangladesh Correspondence should be addressed to Ilyas Khan; i.said@mu.edu.sa and Md. Nur Alam; nuralam.pstu23@gmail.com Received 16 October 2021; Revised 30 January 2022; Accepted 22 February 2022; Published 11 April 2022 Academic Editor: Raghvendra Bohara Copyright © 2022 Hazoor Bux Lanjwani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This paper deals with two-dimensional steady boundary layer flow, heat, and mass transfer characteristics of micropolar nanofluid past on exponentially stretching/shrinking surface. The effect of different physical parameters like magnetic field, buoyancy, thermal radiation, and connective heat transfer are examined. Furthermore, similarity solutions are obtained by similarity transformation on the governing system of partial differential equations. The shooting method with help of the Maple software is used to achieve the numerical solutions of the equations. For the different ranges of the applied parameters, triple solutions are obtained for both cases of the surface. In view of the triple solutions, stability analysis is performed by bvp4c in the MATLAB software, where only first solution is found feasible which is discussed. The main findings of the first solution indicate the skin friction, drag force, heat, and mass transfer rates are increasing for the λ >0 and decreasing for λ <0 as the K is enhanced. The velocity profiles decrease with increase in magnetic, slip velocity, and suction parameters. The temperature profiles increase with increase in magnetic, thermophoresis, thermal radiation, and Brownian motion parameters, whereas concentration profiles reduce with increase in Schmitt number and Brownian motion. 1. Introduction The study of non-Newtonian fluid flows have gained much importance, because of the common Newtonian fluids may not completely satisfy the properties of the fluid flow in many industrial applications, examples of such fluids are biological fluids, polymeric fluids, fluids containing addi- tives, liquid crystals, and paint colloidal solutions. Moreover, the class of the non-Newtonian fluids containing different kinds of complex properties are Casson fluids, Maxwell fluids, and micropolar fluids. The micropolar fluid intro- duced by Eringen [1] possesses a microscopic effect due to the microstructure and micromotion of particles present in fluid. These microstructure particles are of different shapes which rotate independently to the motion of the fluid perti- cles (Anwar et al. [2]). The system of the micropolar fluid flow equations contains a microrotating vector besides the classical velocity vector. These fluids contain smaller rigid particles which rotate about the centroid of volume particles that predicts the flow behaviors at rotation and microscale independently that is defined by a microrotation vector. Therefore, micropolar fluids are very important in fluid dynamics, especially in studying some flows around some important surfaces such as stretching surfaces or shrinking surfaces. In this regard, MHD micropolar fluid flow on the inclined plate was investigated by Kasim et al. [3]. The micropolar fluid flow on the inclined surface with different physical parameters was also studied by Das [4]. Srinivasa- charya and Bindu [5] examined the entropic generation of the micropolar fluid with parallel plates on the inclined Hindawi Journal of Nanomaterials Volume 2022, Article ID 3147696, 21 pages https://doi.org/10.1155/2022/3147696