India

With the marks you obtain in class 12th, you can apply in engineering colleges. Try to do good in the entrance exams. Good luck.

The national college of engineering, Tamil Nadu is just any other average college which is due to some people couldn't grow as much it deserved and is now an average college with average placement records.

Hello Siva, You can consider this preference order wise:
VIT Vellore, SRM university Chennai, Jansons College of Technology, PSG Engineering College, Adhiyamaan College of Engineering Hosur, Thiyagarajar College of Engineering Madurai, BMS Bangalore, SSN College of Engineering Chennai are best in civil engineering placement statistics. All the best for your future.

Yes, Tattoos don't hamper your selection for BBA Aviation. It is usually restricted in those job profiles where the employee needs to interact with the passengers one to one and if the tattoo is on any visible body part. You may go ahead for BBA Aviation.

The exact dates are still not out, for more details check the link below :
https://www.shiksha.com/university/jawaharlal-nehru-technological-university-kakinada/exams/ap-eamcet/dates.

The exact dates are still not released. For more details, check the link below:
https://www.shiksha.com/university/jawaharlal-nehru-technological-university-kakinada/exams/ap-eamcet/dates.

Your rank is very high. It is difficult to get admission in university school. You may get admission into a private college like IIMT and lower in spot counselling round.

Your combination is really good and unique but to get a good job you have to have the uniqueness in you and gather whatever knowledge you could because jobs especially in these fields are based on your knowledge and ability to perform tasks not based on your CV.

RTU conducts their own entrance exams RPET. The quality of colleges under RTU is not so good. So, if you can head to the south. Don't be afraid to come out of your shell.
Good luck.