This is very good to know that you are so serious about your Gate preparation but as per my view it is better to start your preparation in your 3rd year because first 2 years of B.Tech is the ideal time to make all your basics concept clear and strong.

You can become a guest lecturer or lecturer in private colleges after doing your B.tech. If you want to persue your career in teaching you must complete M.tech Upon the completion of this course, it is needed to clear the NET or the SLET exams. The main purpose of these

I would suggest you to complete NCERT properly as these will be helping you to make all your concepts clear and strong, apart from that you can consider below books as well -

• Arihant’s Last Year Papers
• R.D. Sharma for Mathematics
• S.Chand & Pradeep’s for Physics & Chemistry

Hope this

Yes, it is tough to get student visa now a days.

There are many reasons of getting visa rejected like incorrect information, No plan to return, lack of knowledge in English and bad presentation. 

You should be well planned if you are applying for student visa

You will go through

It depends on the colleges under IPU. For example USIT offer the average package for CSE approximately 4 to 5 Lakh Per annum and MSIT offers the package approximately 3.5 to 4 lakh per annum.

If you specify the particular college name then I can help you more about.

Salary depends on job profile and company. It also depends on your skills & capability. Most of the private sector companies Offer packages ranging from 5-7 lakh PA. But if you get PSUs through exam then you can expect a starting package of 10 lpa plus other perks.

Good Luck!

The highest & average package depends on the company & your skill & performance. But some companies visit to campus offer the salary range from 6.5 to 12 Lakh per annum. For further detail about the placement you can go through with given below link.

Vel tech University placement

You can choose any field according to your interest.  When you do masters degree from abroad , it is MS And if you pursue master degree from india , it is Mtech. Both have good scope.

It also depends on the country which you choose. If you compare US from

IIT BHU takes the admission through JEE Advance. As per the analyzing report of Careers 360 it has AAAA+ which means outstanding. You can check the eligibility to apply for JEE Advance with given below link.

Eligibility

You should have scored atleast 75% aggregate marks in 10+2th standard (or equivalent)