The following courses have video lectures for the core subjects. The access to the courses is for 6 months (if not specified) from the date of purchase. Bundle courses are available for 1 month, 6 months, 1 year, and 2 years access. The lectures therein consist of brief review of theory and detailed explanation to typical problems. Typically about 1-3 hours of theory, and 7-12 hours or problems are available for a course. Problems are from past questions of GATE, and from standard books. For complete learning of a subject, it is suggested to purchase access to the textual courses as well.
Chemical Engineering Learning Resourcesmsubbu