Engineering Entrance Exam

Yes, you can definitely get some top private colleges like BITS (if you appear for BITSAT), LNMIT-Jaipur, PSG College-Coimbatore, MIT-Pune, BIT-Mesra and some of the government colleges too.

Hello Kanika,
To get information regarding the forms and other updates, you need to refer to their respective websites.
For JEE main - www.jeemain.nic.in
For BITSAT - www.bitsadmission.com

Hello Aman,
IIT is one of the biggest government colleges in India. IIT provide great knowledge as well as placement, but BITS-Pilani is also a decent college. If you qualify both the exams, it means you are one of the best students in India.
All the best!

It is JEE Mains as well as the engineering exam of your state.

Hello Sanjay,
Yes, NIOS is acceptable to TENA.

Hello,
JEE is only for the undergraduate admissions. For post graduate education, you need to appear for GATE (Graduate Aptitude Test in Engineering) which is conducted by the IITs for the post graduate studies.

It depends on the area where you live. Prefer better faculty first. If you're an average student, interact with seniors. Keep in mind the pros and cons of joining each institute and then take your decision. Even then Allen test material is good. If private tutors are better, join them. Good here means someone who is tried and tested on the JEE level, not on the school level. Approach a teacher who can make you understand things is better than one who gives tough questions and is unable to make you understand them if both the teachers are of the same level.

These are easier than JEE Mains and Advanced. Try to prepare for Mains and Advanced properly and you would surely crack these if you would be in the position to crack both Mains and Advanced.