What is the difference between research question and research objective?
In my opinion, every research question can be paraphrased as a research objective and vice versa. Am I right?
Although the specific formal definition can be field specific, Farrugia et al do a nice job of laying out "research questions", "hypotheses", and "objectives" in their open access article (linked above). Note their article targets medical researchers, but applies to other fields as well.
To summarize/highlight their definitions: