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P5 Science 2021 — Catholic High CA2 Weighted Assessment
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| Level | P5 (Primary 5) |
| Subject | Science |
| Year | 2021 |
| School | Catholic High |
| Paper type | CA2 Weighted Assessment |
| Total questions | 14 |
| Question format | 8 multiple-choice, 6 open-ended |
| Booklets | Booklet A (MCQ) · Booklet B (open-ended) |
| Original paper | 14-page PDF |
This is the 2021 Catholic High P5 Science CA2 paper, a 14-question exam made up of 8 multiple-choice questions and 6 open-ended questions. On ChatPSLE you can attempt every question online, get it marked instantly, and ask an AI tutor to explain any answer step by step — instead of just downloading a static PDF.
Topics covered
DiversityCyclesSystemsInteractionsEnergy
Sample questions from this paper
Study the circuit diagrams. Which two bulbs have the same brightness?
- A and B
- A and C
- B and D
- C and D
Which graph shows the correct relationship between the intensity of an activity and a person's pulse rate?
The diagram shows the human respiratory system. Which of the following correctly describes the function of parts X, Y and Z?
- removes harmful gases from the air / absorbs air into the lungs / gaseous exchange takes place
- filters dust and dirt in the air / allows air to pass through from the nose to the lungs / gaseous exchange takes place
- filters dust and dirt in the air / absorbs air into the lungs / absorbs oxygen and carbon dioxide
- traps bacteria and dust in the air / allows air to pass through from the nose to the lungs / removes carbon dioxide from the lungs
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More Catholic High papers
2025 P6 Science — Catholic HighSA2 Preliminary Examination · 40 questions2025 P6 Science — Catholic HighWA1 Non-Weighted Assessment · 11 questions2025 P6 Science — Catholic HighWA2 Weighted Assessment · 13 questions2025 P6 Chinese — Catholic HighSA2 Preliminary Examination · 40 questions2025 P6 Chinese — Catholic HighWA1 Assessment · 28 questions2025 P6 Chinese — Catholic HighWA2 Assessment · 11 questions
Other P5 Science papers
2025 P5 Science — ACS JuniorSA2 Semestral Assessment 2 · 41 questions2025 P5 Science — ACS JuniorWA1 Non-Weighted Assessment · 7 questions2025 P5 Science — ACS JuniorWA2 Weighted Assessment · 8 questions2025 P5 Science — ACS JuniorWA3 Weighted Assessment · 10 questions2025 P5 Science — ACS PrimarySA2 Semestral Assessment 2 · 41 questions2025 P5 Science — ACS PrimaryWA1 Non-Weighted Assessment · 7 questions
Other 2021 Science papers
2021 P5 Science — ACS JuniorCA2 Weighted Assessment · 13 questions2021 P5 Science — ACS JuniorSA1 Semestral Assessment 1 · 12 questions2021 P5 Science — ACS JuniorSA2 Semestral Assessment 2 · 41 questions2021 P6 Science — Ai TongSA1 Semestral Assessment 1 · 40 questions
Frequently asked questions
- Is the 2021 Catholic High Science paper free?
- Yes. You can attempt this P5 Science paper online for free on ChatPSLE. A premium plan adds step-by-step worked explanations and unlimited AI tutoring.
- How many questions are in this Science paper?
- It has 14 questions in total — 8 multiple-choice and 6 open-ended.
- Can I get answers and explanations?
- Yes. ChatPSLE marks your answers instantly and its AI tutor explains the reasoning for each Science question, worked out step by step.