In India, I often get government mails (e.g. reminder for some compliance) of local city with all the business owners in CC. I even went to authority in question to tell them about the privacy issue in vain.
So if a EU citizen's email id was part of the list, will it be liable for action according to GDPR?
Yes, but if an entity has no interest in interacting with the EU then they don't have to respond. You only need to care about a country's laws if (1) you want to do business or visit there or (2) you're going to piss them off to such a degree that they convince your home country to come after you.
So if a EU citizen's email id was part of the list, will it be liable for action according to GDPR?