How to unambiguously ask a question with "OR"
Solution 1:
One way would be to prefix the answer selection with "Answer Yes or No". However, I would recommend the following:
Is this question about either McDonalds Corporation or McDonalds Products?
The word either suggests that either of the two options is accessible, which in the context of a yes/no question forces the interpretation that you desire.
If there are three or more things, try "any of":
Is this question about any of apples, pears, or pineapples?