MCQ Collection

New South Wales HSC Sciences MCQs

Practice New South Wales HSC Sciences questions with answers and explanations.

nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 111: A New South Wales senior class applies the information to a coastal community planning problem. A 24 kg test trolley accelerates at 11 m/s². What net force acts on it?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 112: A New South Wales senior class applies the information to a coastal community planning problem. A circuit has 45 V across a 4 Ω resistor. What current flows?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 113: A New South Wales senior class applies the information to a coastal community planning problem. A compound has molar mass 26 g mol⁻¹. What is the mass of 9 mol?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 114: A New South Wales senior class applies the information to a coastal community planning problem. An enzyme extracted from pea seedlings is tested at 34°C. Which statement about enzyme action is correct?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 115: A New South Wales senior class applies the information to a coastal community planning problem. Cells from the bone marrow of a growing organism undergo mitosis. What is the usual outcome?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 116: A New South Wales senior class applies the information to a coastal community planning problem. A solution has pH 4. What is its hydrogen-ion concentration?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 117: A New South Wales senior class applies the information to a coastal community planning problem. A device transfers 119 J in 14 s. What is its average power?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 118: A New South Wales senior class applies the information to a coastal community planning problem. In experiment 58, temperature is varied while growth of bacteria is measured. Why include an untreated control?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 119: A New South Wales senior class applies the information to a coastal community planning problem. In genetic cross 59, two heterozygotes Aa are crossed under complete dominance. What is the probability of a dominant phenotype?

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nsw-hsc New South Wales HSC Sciences AustraliaHard

Science task 120: A New South Wales senior class applies the information to a coastal community planning problem. A tracer starts at 0.16 mol and undergoes 4 half-lives of 4 minutes each. How much remains?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 108: A New South Wales senior class applies the information to a coastal community planning problem. In experiment 48, pH is varied while growth of mice is measured. Why include an untreated control?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 109: A New South Wales senior class applies the information to a coastal community planning problem. In genetic cross 49, two heterozygotes Aa are crossed under complete dominance. What is the probability of a dominant phenotype?

Choose an option to check your answer.