JEE Advanced

Yes, you are eligible to appear for JEE Mains 2017.

Placement have no relationship with the years you drop, but with the skills you have. They want most skilled and hardworking employers for today, no matter what was your history.

You must be in top 400-500 rank holders in IIT JEE advance in order to get admission in IITs.

JEE exam 2017: No weightage to Class XII marks, news is published in Indian Express.

1. For physical chemistry: PW Atkins.
2. For inorganic chemistry: JD Lee.
3. For organic chemistry: Morrison and Boyd.
4. For physics: HC Verma
5. For mathematics: Arihant Prakashan.
Also, you can buy DLPD books of Kota's best IIT classes (like Resonance, Bansal and many more)
If you get DLPD, you will get better rank than reference books. And, don't forget to refer NCERT books also.

No, it not true. There will be always 2 mode of paper, i.e. offline and online.

It is the criteria for JEE advance.

Sorry to say but maximum of three times a candidate can appear in JEE Mains but for JEE Advanced, this is restricted to just 2 chances. In short you can't appear in JEE Advanced in 2017.