Hello Bharti,

With this marks it is difficult to get into IISc Electrical branch if you belongs to general category but if you belong to any reserve category than you might have some chance.

But it totally depends upon no. Of candidates applying for the admission and also every year the cutoff changes so you can only predict as of now.

But meanwhile I'm providing you the link where you can see last years cutoff of IISc with different branches and different categories so that it will help you to get some idea

https://engineering.careers360.com/articles/gate-cutoff-for-iisc-bangalore/amp

Also, you can use below link which will guide you as to which college to choose as per your marks 

https://engineering.careers360.com/gate-college-predictor

Hope this will help you. Feel free to ask any query.

At 72,around 2k rank. IISC is near to impossible in general category at this rank