Science Questions & MCQ — Free Practice with Answers
Free science questions and MCQ with answers, aligned to the Singapore MOE Primary Science syllabus. Each question comes with detailed explanations for revision and exam preparation — so your child learns from every attempt, not just the score. Covers PSLE Science topics from Primary 3 to Primary 6.
Science Practice Questions by Topic
15 topicsChoose a topic below to practise science questions and MCQ with answers and explanations.
Cycles
3 topicsWater Cycle
P5 – P6Free water cycle revision questions and MCQ with answers and explanations. Practice evaporation, condensation, and precipitation — aligned to the Singapore PSLE Science syllabus.
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Matter
P4 – P6Free matter revision questions and MCQ with answers and explanations. Practice states of matter, properties, and changes — aligned to the Singapore PSLE Science syllabus.
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Plant Reproduction
P5 – P6Free plant reproduction revision questions and MCQ with answers and explanations. Practice pollination, seed dispersal, and germination — aligned to the Singapore PSLE Science syllabus.
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Systems
5 topicsDigestive System
P5 – P6Free digestive system revision questions and MCQ with answers and explanations. Practice organs, digestion, and absorption — aligned to the Singapore PSLE Science syllabus.
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Respiratory System
P5 – P6Free respiratory system revision questions and MCQ with answers and explanations. Practice breathing, gas exchange, and lungs — aligned to the Singapore PSLE Science syllabus.
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Photosynthesis
P5 – P6Free photosynthesis revision questions and MCQ with answers and explanations. Practice light energy, carbon dioxide, and food-making in plants — aligned to the Singapore PSLE Science syllabus.
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Electrical Circuits
P5 – P6Free electrical circuits revision questions and MCQ with answers and explanations. Practice open/closed circuits, conductors, and series circuits — aligned to the Singapore PSLE Science syllabus.
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Circulatory System
P5 – P6Free circulatory system revision questions and MCQ with answers and explanations. Practice the heart, blood vessels, and blood — aligned to the Singapore PSLE Science syllabus.
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Interactions
4 topicsForces
P4 – P6Free forces revision questions and MCQ with answers and explanations. Practice gravity, friction, and elastic spring force — aligned to the Singapore PSLE Science syllabus.
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Food Chains
P5 – P6Free food chains revision questions and MCQ with answers and explanations. Practice producers, consumers, and food webs — aligned to the Singapore PSLE Science syllabus.
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Magnets
P3 – P5Free magnets revision questions and MCQ with answers and explanations. Practice magnetic materials, poles, and attraction and repulsion — aligned to the Singapore PSLE Science syllabus.
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Food Webs
P5 – P6Free food webs revision questions and MCQ with answers and explanations. Practice interconnected food chains, producers, consumers, and decomposers — aligned to the Singapore PSLE Science syllabus.
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Energy
2 topicsLight
P4 – P5Free light revision questions and MCQ with answers and explanations. Practice shadows, light sources, and reflection — aligned to the Singapore PSLE Science syllabus.
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Heat & Temperature
P4 – P5Free heat and temperature revision questions and MCQ with answers and explanations. Practice heat transfer, conduction, and thermal expansion — aligned to the Singapore PSLE Science syllabus.
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PSLE Science Questions by Level
Practice questions matched to what your child is learning at each primary school level in Singapore.
How It Works
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