Hello Jalagam,
Sorry to say, but if the entrance exam was average and your board percentage is 90, then getting CSE or ECE at Shiv Nadar will be very difficult as they are the most preferred branches at Shiv Nadar University. But, you might be able to get one of the less preferred branches.
For more information on Shiv Nadar University, follow the below link:
Https://www.careers360.com/university/shiv-nadar-university-greater-noida
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