There are a couple of things to consider when uploading a survey analysis project. Do I want to upload the whole survey or do I want to look at question by question? For analysis, always look at each individual question. The way you ask a question completely changes the way someone answers with natural language. Always create an individual project for each question.
You can always upload the full survey data with a list of questions as the string_ value and then separate from there. However, make sure your analytics are derived from the project around the individual question for the most accurate results.