MCQ Collection
South Australia SACE Sciences MCQs
Practice South Australia SACE Sciences questions with answers and explanations.
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Correct Answer: C. 78
Explanation:
Mass=nM=3×26=78 g.
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Correct Answer: D. It lowers activation energy without being consumed.
Explanation:
Enzymes alter reaction rate by lowering activation energy.
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Correct Answer: D. Two genetically similar daughter cells with the same chromosome number.
Explanation:
Mitosis supports growth and repair.
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Correct Answer: B. 1 × 10⁻6 mol L⁻¹
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Correct Answer: A. 59.88
Explanation:
P=E/t=59.88 W.
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Correct Answer: C. To estimate what happens without the experimental treatment.
Explanation:
A control provides a comparison baseline.
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Correct Answer: B. 1 × 10⁻4 mol L⁻¹
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Correct Answer: A. 15.48
Explanation:
P=E/t=15.48 W.
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Correct Answer: D. To estimate what happens without the experimental treatment.
Explanation:
A control provides a comparison baseline.
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Correct Answer: D. 2.32
Explanation:
I=V/R=2.32 A.
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Correct Answer: A. 130
Explanation:
Mass=nM=5×26=130 g.