Hello Midasala.
Sorry but I could not understand your question properly. I suppose you mean to say that you have a year backlog in BTech so it is bothering you for your placements.
I would like to tell you that if you clear the backlog then you can have your placements without any delay as you need to submit your gradereport and degree certificate. With back you would definitely not get the certificate and also your cgpa would reduce.
Also doing MTech from IIT Bombay after your BTech will help you alot in your placement for Job and you would have a great chance for getting job in companies like Google, Amazon, Diercti etc.
Hope it helps.
Candidates can check B.Tech Cut off for Top IITs & NITs here.
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