The correct preposition to use with specific time references such as "9 o'clock" is "at". So the correct sentence is: "Train reached at 9 o’clock." This is a basic rule of prepositions in English grammar, where "at" is used for specific times.
Train reached ______ 9’o clock?
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Question context
This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.