yes, thanks Joppa. I spent a good chunk of time on the forums and got this response on a few similar threads. I won't be able to get a residence permit for just a 1 month trip to Europe, so will have to come back to India. Can't get another passport either.Generally no. You can only apply in India or where you hold legal residence (not visitor stay). Your choice is to apply now for your fiancé visa (you may need to postpone your trip to Europe - remember which is more important), or get another passport for your travel to Europe with appropriate visa endorsement. I don't know about India, but many countries allow a second passport for frequent business travellers to enable them to apply for a visa while travelling on business.
I'm not sure if you are allowed to study while on fiancé visa, which is only valid for 6 months. You will be able to once you get your leave to remain as spouse following your marriage.