I understand two possible interpretations for this question in English, but I don't know if both can be understood in Welsh as well with this sentence:
1) "Do you want apple or lemon?", like "Choose only one, please."
2) "Do you want apple or lemon?", like "Do you want something? An apple... maybe a lemon..." (offering fruits)
Are both interpretations acceptable with "Dych chi eisiau afal neu lemon?" as well?