"Do you like potato chips in general?"
I would read this as meaning: "Do you like potato chips as a type of food (without considering particular brands or flavours)?
An answer might be: "Yes, I eat them a lot, although I hate the vinegar ones".
For the meaning I think you are suggesting in (1), a more usual form would be "Do you generally (usually, normally) like potato chips?"
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Student or Learner