The cut-off for the general category in the last and the final open round for HBTU Kanpur from 2021 is as follows (JEE Main ranks):

Biochemical Engineering: 73580 (opening) and 103039 (closing)

Chemical Engineering: 33170 (opening) and 57862 (closing)

Civil Engineering: 36834 (opening) and 61740 (closing)

Computer Science & Engineering: 14586 (opening) and 20923 (closing)

Electrical Engineering: 37337 (opening) and 47339 (closing)

Electronics Engineering: 28237 (opening) and 36463 (closing)

Food Technology: 55455 (opening) and 120100 (closing)

Information Technology: 21678 (opening) and 27215 (closing)

Leather Technology: 113174 (opening) and 124084 (closing)

Mechanical Engineering: 22490 (opening) and 51142 (closing)

Oil Technology: 66751 (opening) and 106255 (closing)

Paint Technology: 51418 (opening) and 72168 (closing)

Plastic Engineering: 73229 (opening) and 102494 (closing)

Above are all the opening and closing rounds for the last round. Hope I have answered your question. All the best!