Our country has fallen in love with IT so the intake of the core sectors placements has declined within the years, it doesn’t mean that the students unplaced they are placed but with a low package of 5–6 lakhs which is low because in core jobs experience is the most important thing to be gained .After gaining experience you may have an exponential increase in ur salary due to the BITS tag which would be around 20–30 lakhs.
The placements in mechanical engineering are decent if you work hard you may also get your dream job.Some of the past recruiters are Tata motors,Skoda,GE,Bajaj,Chrysler.