Secondary · Prelim 2025
Sec 4 N(A) Science (Chemistry) 2025 Prelim Papers
8 papers for Secondary 4 N(A) Science (Chemistry), as sat in 2025 at schools including Ang Mo Kio, Bowen, Sengkang. Free to download — no payment, no subscription.
- Subject
- Secondary 4 N(A) Science (Chemistry)
- Exam
- Prelim
- Year
- 2025
- Schools
- 3
Download the papers
- Ang Mo KioExam paper · answers included
- Ang Mo KioExam paper
- Ang Mo KioWorked solutions
- BowenExam paper
- BowenExam paper
- SengkangExam paper
- SengkangExam paper
- SengkangWorked solutions
How to get the most from these
Prelims are the last full rehearsal before the O-Levels, and schools pitch them harder than the national paper on purpose. Sit one to time, in one sitting, before looking at any answers — a prelim done in pieces tells you nothing about pacing, which is what most marks are lost to. Then compare two schools' 2025 papers: topics that appear in both are near-certain, and topics in only one are usually that school's habit.
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