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ACT Practice Science Scientific Reasoning MCQs Test 2
ACT Quiz
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General

ACT Practice Science Scientific Reasoning MCQs Test 2

Practice ACT 2026 Practice Test Science MCQs from Scientific Reasoning. Get instant results with Explanation.
Practice Quiz 2 for "Scientific Reasoning" (Science). Total 26 MCQs available, split into 3 quizzes. Test your understanding of core concepts. Mastering these concepts is essential for securing a high percentile in ACT.
General10 MCQs
1. A student compares the number of leaves on plants grown in light and dark. The light-grown plant has 20 leaves, the dark-grown has 10 leaves. What can be inferred?
2. A student places potato cores in salt solutions of different concentrations and observes that the mass decreases in higher salt concentrations. What can be concluded?
3. A study finds that students who eat breakfast have higher average test scores than those who do not. What can be concluded?
4. A gardener observes that tomato plants in full sun produce more fruit than those in partial shade. What can be concluded?
5. A scientist measures the pH of a lake over time and finds it has decreased from 7.5 to 6.5 over 10 years. What can be inferred?
General10 MCQs
6. A farmer tests the effect of fertilizer on crop yield. To support the hypothesis that fertilizer increases yield, what should the results show?
7. A student measures the rate of photosynthesis at different light intensities and finds that the rate increases with light intensity. What can be concluded?
8. An experiment on enzyme activity shows that the rate increases from 10°C to 40°C and decreases from 40°C to 70°C. What can be inferred?
9. A scientist measures the biomass of plants grown in light and dark. The light-grown plants have twice the biomass of the dark-grown plants. What can be concluded?
10. A study finds that students who study for at least 2 hours have higher average test scores than those who do not study. What can be concluded?

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Conducting Body: ACT Education Corp
Frequency: 7-8 Times per Year | Time: 165 Minutes
Negative Marking: No

⚡ Test Pattern (Total: 171 MCQs):

Merit Formula: Merit_calculation = University/College Specific Weightage = Not Fixed Score_range = 1–36

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