Which is better, an IIT KGP CSE dual degree or an IIT Roorkee CSE B.Tech?

Without any second thoughts, choose IIT Roorkee CSE B. Tech over IIT KGP CSE dual degree because dual degrees are usually less preferred by companies coming for placements.

It’s better to do MTech after BTech than to opt for a dual degree. The main reason is that in Masters you are open to changing your branch in case your interest goes to another field. But a dual degree means you will be studying the same field with no option of changing in between.

Another major disadvantage of a dual degree is that you are not eligible to change your branch to a 4-year program irrespective of your CGPA

You will see your batchmates leaving a year before you and getting offers and settling well before you.

IIT KGP no doubt is older and better than IIT Roorkee in every aspect. But as far as the program is concerned, a dual degree is not worth spending so many years at all.