B.Tech

Since, you have already completed your Diploma course, you can pursue B.Tech in mechanical engineering via lateral entry i.e. taking admission directly in the 2nd year provided that you have scored the qualifying marks depending upon the colleges (generally above 50%).
Some of the colleges are:
Amity

There are no special books for B.Tech in BIT Mesra.

If you are interested in B.Tech biotechnology, then you should ready to complete Ph.D in biotechnology because very least number of opportunities are available for under graduation and then you should ready for research line. If you are interested in these things, it will be the best opportunity eve

I am sorry JS but I don't think there is any such provision of getting a direct entry to 2nd year directly after 10+2. You have to pursue from the very beginning i.e. from the 1st year. But if by any means you are not able to pursue B.Tech, then you can pursue a Diploma in the related stream and the

Hello Vidhi,
As per your rank you will get good colleges, however check here to know more:
https://www.shiksha.com/b-tech/resources/comedk-college-predictor

Following are some of the links where you can find the list of colleges offering courses in sound engineering. One such college is Audiolife School of Sound Engineering. Thank you and Best of Luck.