Hello Varghese Ninan. Thanks for contacting Careers360 and we hope we will be able to answer your query.

Please understand that studying in BITS is a prestige in itself and if you shine well, you have a chance of going to heights. I would like to direct your attention to this Quora question for more information:

• https://www.quora.com/in/I-want-to-take-up-dual-degree-MSc-maths-in-the-BITS-Pilani-But-my-parents-are-not-allowing-me-to-do-so-due-to-some-valid-concerns-What-are-some-ways-in-which-I-can-convince-them

According to me, I feel that you can write GATE or you can sit and prepare one year for placements. 

Hope this helps you and all the best!