Researchable and Nonresearchable questions

A researchable research question is one that can generate a hypothesis that can be tested through a structured and rigorous process of data collection, analysis and testing, either quantitatively, or qualitatively or a hybrid of methods.
A non-researchable research question is, therefore, one that is not formulated to enable a testable hypothesis to be generated. This does not mean that the topic is not capable of sustaining research. Often it is a matter of recasting the question so that specific testable hypotheses can be formulated.
Researchable vs. Non-Researchable
Researchable questions imply the possibility of empirical investigation. Which approaches taken by American colleges are most effective in increasing the recycling rates among its undergraduate students. Non-researchable problems include explanations of how to do something, vague propositions, and value-based concerns. Is democracy the best form of government? Can crime be prevented? Should cell phone use while driving be banned? Should sex education be taught in public schools?
https://www.quora.com/What-is-a-non-researchable-research-question
A researchable research question is one that can generate a hypothesis that can be tested through a structured and rigorous process of data collection, analysis and testing, either quantitatively, or qualitatively or a hybrid of methods. A non-researchable research question is, therefore, one that is not formulated to enable a testable hypothesis to be generated. This does not mean that the topic is not capable of sustaining research. Often it is a matter of recasting the question so that specific testable hypotheses can be formulated. Non-researchable questions could be too broad or vague, or they could be questions for which answers are easily obtainable. The former lacks a defined framework for testable criteria, data collection and analysis, and the latter is readily answered by counting records
https://www.quora.com/What-is-a-non-researchable-research-question