I see in this render the individual faces that make up the curved parts are distinctly visible. I need to make the curved faces of the model smooth so that the individual faces do not appear. Is there any way to make it so? I tried smooth shading, but that makes the sharp edges smooth as well.
It's a two step process, first you have to turn on smooth shading, then turn on "Auto Smooth" (highlighted in green) in the Normals tab. Basically, any edge which connects two faces that are less than 30º from each other will smooth them out, otherwise it'll stay flat shaded. You can also change it depending on your needs