Hi Aditya,

Yes you can appear in GATE examination with CSE paper if you have Mechanical engineering degree.

The basic academic qualification required for GATE is that candidates must have passed graduation in engineering/technology or Master’s degree in any relevant science subject. Candidates in pre-final or finaly year of their qualifying degree also eligible to appear for GATE. This year the third year students can also write GATE examination.

If you are Mechanical engineering candidate and would like to write GATE with CSE paper then you can give GATE but it will not be beneficial for you in my view. Rest is upto you. You have to write and prepare for GATE.

For more information please check the link below: https://www.google.com/amp/s/engineering.careers360.com/articles/gate-eligibility-criteria/amp

All the best.