Indian eVisa is issued for various purposes such as tourism, recreation, sightseeing, casual visit to meet friends or relatives, short duration medical treatment or casual business visit, which makes traveling to India more convenient and time-saving than ever.
No, you do not need to do that. All steps will proceed completely online.
The Government of India approves many countries for all kind of Indian eVisa. Please check requirements for details.
No, you are not permitted to apply in that case.
The Indian eVisa is not available to Diplomatic/Official Passport Holders. There is just only the ordinary passport is able to use for apply Indian eVisa.