Q.What is the difference between AutoCAD and SolidWorks?

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Ans-Solid works is primarily 3D modeling software, catering to Mechanical engineers and          manufacturing engineers to build parts meant to be machined by hand or even for CNC. The structure of a file are based on features of a part, with modifications based on on the previous modifications.

AutoCAD is primarily 2D software catering to Architects, home builders and civil engineers to layout. It us used to convey layout information quickly, succinctly, and makes ample use of layering eg. One layer for electrical, one layer for plumbing one for framing etc.