Applying for Naturlisation outside UK

[Engineer]

Hi,

Myself and my family(Wife and Son) are on ILR granted in April 2010. My son is born in UK and therefore would be eligible to get the Citizenship if I wish to apply, however I believe myself and my wife would only be eligible in April 2011 i.e. after completing one year on settlement Visa.

However I got an opportunity to work for a British Company in India(I would be employed in India and the offer is from the Indian branch of the UK company).

I would like to join the company in the new year so that I would not be away from UK more than 90 days prior to applying for naturilisation. But can any one of you help me with these queries:

1) Can I apply for Naturilisation in India if I fulfill all the other requirements i.e. in terms of stay etc.

2) Can I apply for British passport in India should my application for naturlisation be successful.

3)Can I apply for OCI card in India.

4) If my application is not successful in India for whatever reason can I come back to UK under ILR if it is before two years the date I left UK.

5) Can I apply for naturilisation for my son in UK if our application is rejected in India and do I get any money back if the application is unsuccessful.

Any help would be greatly appreciated.

Thank you in Advance.