Both reliability and validity are terms that come from quantitative research, and thus have little direct application to qualitative research. Can you say more about this is "required" for your project?
Hello David, thank you for your kind response. I am conducting an interview to get opinion on blockchain impact on insurance and for this I have to validate the questions designed to ask the industry experts. Any thoughts on this will be really helpful. Also, is it possible to get your email?
I am not sure what it would mean to "validate" a question in qualitative research. In quantitative research, one validates measures by examining patterns of correlations, which would not be relevant here.
I suggest that you ask the person making this request for help in clarifying what they want. You can send me a personal message here on RG.