Dear Aspirant,

It will be too early to prepare for any exam in your first year as you might loose motivation down the lane. I suggest you should start your preparation from the 5ht semester.

In between however, do not forsake your btech studies. Make sure that you have studied your btech subjects with full dedication. There are some subjects in btech which are not there in the syllabus of GATE or HD or ESE exam, so make sure to study the important subjects throughly.

Moreover, you can also use previous year papers of GATE, ESE( IES ), etc.

Here are some links for you:-

https://engineering.careers360.com/articles/bits-hd-admission-test

https://engineering.careers360.com/articles/bits-hd-syllabus

Thank you.