In my opinion, the two worst courses one should refrain from ever taking in IIT Delhi are MCP 100 and MCP 101.
MCP 100: This course is Engineering Drawing and is one of the most irrelevant courses offered at IIT Delhi. It is taught by prof Sujeet Kumar Sinha who has no teaching skills and is always in a rush to complete the course. The entire syllabus is completed in just 2 months leaving no space to comprehend what was taught.
MCP 101: This course comprises concepts such as casting and welding which are not expected to be studied by an IITian at least.
Both the courses are a complete waste of time and don’t do justice to the institute's reputation.