ACT 2026 Practice Test Science Research Summaries Free Quiz 2

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ACT 2026 Practice Test Science Research Summaries Free Quiz 2

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ACT 2026 Practice Test Science Research Summaries Free Quiz 2

Practice ACT 2026 Practice Test Science MCQs from Research Summaries. Get instant results with Explanation.

General5 MCQs

11. A table shows the number of bubbles produced during photosynthesis at different temperatures: 10°C → 5, 20°C → 10, 30°C → 15, 40°C → 20. What is the relationship?

A. Positive correlationB. Negative correlationC. No correlationD. Exponential correlation

12. Two groups of plants are grown in full sun and under shade. The average height after 4 weeks is 25 cm for full sun and 15 cm for shade. What can be concluded?

A. The plant in full sun grows slower.B. Both plants grow at the same rate.C. The plant in full sun grows faster.D. The plant in the shaded area grows faster.

13. A table shows the rate of a reaction at different temperatures: 20°C → 2, 30°C → 4, 40°C → 6, 50°C → 4, 60°C → 2. What is the trend?

A. The rate constantly increases with temperature.B. The rate increases then decreases, showing an optimum.C. The rate decreases then increases.D. The rate is independent of temperature.

14. Two trials measure the change in mass of an object over time. Trial 1: mass decreases steadily. Trial 2: mass increases steadily. How do the trends compare?

A. Both trials show an increase in mass over time.B. Both trials show a decrease in mass over time.C. Trial 1 shows a decrease, Trial 2 shows an increase, then a decrease.D. Trial 1 shows a decrease, Trial 2 shows an increase.

15. A student measures light intensity (lux) at different distances from a bulb: 10 cm → 1000, 20 cm → 500, 30 cm → 333, 40 cm → 250. What is the relationship?

A. Light intensity decreases as distance increases.B. Light intensity increases as distance increases.C. Light intensity is independent of distance.D. Light intensity is constant.

General5 MCQs

16. A table shows enzyme activity (units) at different pH: pH 4 → 10, pH 6 → 30, pH 8 → 50, pH 10 → 40. What is the trend?

A. Enzyme activity increases linearly with pH.B. Enzyme activity is constant.C. Enzyme activity increases, but the rate of increase is not constant.D. Enzyme activity decreases with pH.

17. A researcher tests the effect of light duration on flower production. Data: 6 h → 5 flowers, 12 h → 12 flowers, 18 h → 8 flowers. Which light duration is optimal?

A. 6 hoursB. 12 hoursC. 18 hoursD. All durations are equally effective.

18. A table shows reaction rate (mM/s) at different substrate concentrations: 0.1 → 5, 0.2 → 9, 0.3 → 12, 0.4 → 14, 0.5 → 15. What is the trend?

A. The rate increases linearly with substrate concentration.B. The rate decreases with substrate concentration.C. The rate is independent of substrate concentration.D. The rate increases, then levels off.

19. A student grows seedlings in light and dark conditions. After 2 weeks, the light-grown seedlings are 25 cm tall, while the dark-grown seedlings are 10 cm tall. What can be concluded?

A. Light promotes growth.B. Dark promotes growth.C. Light and dark have the same effect.D. The data are inconclusive.

20. A table shows absorbance of a solution at different pH: pH 2 → 1.0, pH 4 → 0.8, pH 6 → 0.6, pH 8 → 0.4, pH 10 → 0.2. What is the relationship?

A. Positive correlationB. No correlationC. Negative correlationD. Exponential correlation

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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):

English: 50 MCQs
Math: 45 MCQs
Reading: 36 MCQs
Science: 40 MCQs

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

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