Hi Amanpreet,First all IITs dont offer M.Des. While IIT Bombay and Guwahati have clearly specified that they take only 4 years bachelors, IISc, IIT Kanpur say a bachelor's degree in engineering/ architecture or design. I would advise you to write to both the institutes- their design department or admission cell and give your details as well as ask the query. You wont lose anything by sending an email. 

Yes, you are right prabhavati. But we see iit's previous criteria. I think criteria is changed this year. Nid also change their criteria. In 2017 ceed eligibility is 4 year programm.now any programm is eligible. In 2017 only  engineering and architecture courses are eligible.

If we see previous criteria of any iit colleges they want 4 year bachlor programm but after diploma my btech become three years. So am i eligible for mdes??