score:4
No problem you will be fine, on Schengen visa page you will be stamped first by Romanian immigration and then later on the same page by Spanish and Austrian authorities.As far as turkey is concerned, you do not need a separate blank page as turkey stamped my passport 5 to 6 times on used pages . On a safe side you have 2 blank pages, you will have no problem in getting in those countries.
Upvote:3
Technically speaking it is possible, but personally, I would not risk it with two blank pages, considering:
Assuming you intend to go back to India, you'll have to have room for the various exit stamps you'll need. At least one for exit from the Schengen zone, and then one for entry into India.
From my travels through Schengen they always stamp the exit next to the entry stamp, and they have never stamped on a non-blank page.