MCQ Collection

Australia MCQs

Practice Australia questions with answers and explanations.

wa-wace Western Australia WACE Sciences AustraliaHard

Science task 90: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A tracer starts at 0.18 mol and undergoes 2 half-lives of 5 minutes each. How much remains?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 91: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A 2 kg test trolley accelerates at 13 m/s². What net force acts on it?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 92: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A circuit has 30 V across a 13 Ω resistor. What current flows?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 93: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A compound has molar mass 26 g mol⁻¹. What is the mass of 5 mol?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 94: A Western Australian senior class applies the information to a resources, distance or environmental investigation. An enzyme extracted from mice is tested at 32°C. Which statement about enzyme action is correct?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 95: A Western Australian senior class applies the information to a resources, distance or environmental investigation. Cells from the bone marrow of a growing organism undergo mitosis. What is the usual outcome?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 96: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A solution has pH 8. What is its hydrogen-ion concentration?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 97: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A device transfers 359 J in 26 s. What is its average power?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 88: A Western Australian senior class applies the information to a resources, distance or environmental investigation. In experiment 28, pH is varied while growth of pea seedlings is measured. Why include an untreated control?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 79: A Western Australian senior class applies the information to a resources, distance or environmental investigation. In genetic cross 19, two heterozygotes Aa are crossed under complete dominance. What is the probability of a dominant phenotype?

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wa-wace Western Australia WACE Sciences AustraliaHard

Science task 80: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A tracer starts at 0.16 mol and undergoes 4 half-lives of 2 minutes each. How much remains?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 81: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A 21 kg test trolley accelerates at 3 m/s². What net force acts on it?

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