MCQ Collection

Australia MCQs

Practice Australia questions with answers and explanations.

wa-wace Western Australia WACE Sciences AustraliaHard

Science task 120: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A tracer starts at 0.24 mol and undergoes 4 half-lives of 7 minutes each. How much remains?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 111: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A 22 kg test trolley accelerates at 16 m/s². What net force acts on it?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 112: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A circuit has 50 V across a 14 Ω resistor. What current flows?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 113: 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 1 mol?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 114: A Western Australian senior class applies the information to a resources, distance or environmental investigation. An enzyme extracted from pea seedlings is tested at 30°C. Which statement about enzyme action is correct?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 115: 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 116: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A solution has pH 4. What is its hydrogen-ion concentration?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 117: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A device transfers 419 J in 15 s. What is its average power?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 118: A Western Australian senior class applies the information to a resources, distance or environmental investigation. In experiment 58, temperature is varied while growth of bacteria is measured. Why include an untreated control?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 119: A Western Australian senior class applies the information to a resources, distance or environmental investigation. In genetic cross 59, 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 AustraliaMedium

Science task 106: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A solution has pH 2. What is its hydrogen-ion concentration?

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wa-wace Western Australia WACE Sciences AustraliaMedium

Science task 107: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A device transfers 389 J in 36 s. What is its average power?

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