The present comment concerns some doubtful results included in the above paper.

In Ref. [1], the momentum equation, the energy equation, and the nanoparticle concentration equation are as follows (Eqs. (3)–(5) in Ref. [1]): 
uux+vuy=υy(uy)n
(1)
 
uTx+vTy=α(2Ty2)+τ{DB(CyTy)+(DTT)[+(Ty)2]}
(2)
 
uCx+vCy=DB(2Cy2)+(DTT∞...

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