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 74: A New South Wales senior class applies the information to a coastal community planning problem. An enzyme extracted from pea seedlings is tested at 16°C. Which statement about enzyme action is correct?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 75: 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 65: A New South Wales senior class applies the information to a coastal community planning problem. Cells from the skin 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 66: A New South Wales senior class applies the information to a coastal community planning problem. A solution has pH 2. What is its hydrogen-ion concentration?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 67: A New South Wales senior class applies the information to a coastal community planning problem. A device transfers 419 J in 26 s. What is its average power?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 68: A New South Wales senior class applies the information to a coastal community planning problem. In experiment 8, 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 69: A New South Wales senior class applies the information to a coastal community planning problem. In genetic cross 9, 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 70: A New South Wales senior class applies the information to a coastal community planning problem. A tracer starts at 0.24 mol and undergoes 2 half-lives of 3 minutes each. How much remains?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 61: A New South Wales senior class applies the information to a coastal community planning problem. A 3 kg test trolley accelerates at 12 m/s². What net force acts on it?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 62: A New South Wales senior class applies the information to a coastal community planning problem. A circuit has 42 V across a 11 Ω resistor. What current flows?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 63: 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 7 mol?

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nsw-hsc New South Wales HSC Sciences AustraliaMedium

Science task 64: A New South Wales senior class applies the information to a coastal community planning problem. An enzyme extracted from bacteria is tested at 28°C. Which statement about enzyme action is correct?

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