Dear Vanaja
It's hardly 1month you have to prepare for gate. And now if you start preparing it's very difficult to crack but if you're having very good basics you can have a chance, if you practise the mock test present in internet mainly in GOAPS website and also in Google. Try to gather the important and easy topics of every subject and utilise maximum time of yours in preparing for gate and also just have a glance on the remaining topics too. In aptitude, English maths are somewhat easy.  Please do take care of that.
All the best.

For GATE one must have thoriugh clearance of basic Fundamentals and should have appeared for 15-20 mock exams.

Analysis of mocks is critical to eliminate your weaknzones and Practice is required to make it your strong zone.

https://engineering.careers360.com/articles/5-tips-crack-gate-in-4-months

Gate prepartion tips byvtoppers and timetable has been compiled for you below:-

https://engineering.careers360.com/tags/gate-preparation-tips

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