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ACT (Enhanced) practice questions

216 free questions with answers and explanations.

Practice test
  1. 101.A political commentator states: 'The current administration's fiscal policies, while lauded by some as pragmatic, are nothing more than a thinly veiled attempt to consolidate power by enriching their base at the expense of the working class. Their claims of economic growth are statistical manipulations designed to obscure the widening wealth gap.' Which rhetorical appeal is the commentator primarily using to persuade the audience?Reading
  2. 102.A novelist is crafting a character's dialogue and wants to convey a sense of casualness and familiarity. The character is describing a past event to a close friend. Which of the following sentences best achieves this tone? Which sentence best conveys a casual and familiar tone?English
  3. 103.An environmental report discusses the impact of deforestation on local ecosystems. It presents data showing a direct correlation between the reduction of forest cover and a decrease in biodiversity, specifically noting a decline in insect populations. The report then explains that this decline disrupts the food chain, affecting birds and small mammals that rely on insects for sustenance. Finally, it suggests that reduced forest cover also leads to increased soil erosion, further degrading the habitat. Which of the following best describes the organizational pattern used in this report section?Reading
  4. 104.A political speech delivered during an election campaign repeatedly uses phrases like 'our shared future,' 'the hope we embody,' and 'a brighter tomorrow for all of us.' The speaker also frequently refers to the collective 'we' and 'us' when discussing goals and challenges. Which rhetorical appeal is the speaker primarily employing?Reading
  5. 105.Read the following excerpt from a historical text: "The invention of the printing press by Gutenberg in the mid-15th century revolutionized the dissemination of knowledge. Prior to this, books were painstakingly copied by hand, a process that was slow, expensive, and prone to error. The press allowed for mass production of texts, drastically reducing their cost and increasing their availability, thereby fueling the Renaissance and the Reformation." Based on the excerpt, what was the primary impact of the printing press on society?Reading
  6. 106.In a novel, a character is described as consistently avoiding eye contact, speaking in hushed tones, and physically shrinking away from others in social situations. Which of the following adjectives best describes this character's typical demeanor?Reading
  7. 107.A chemist is performing a calorimetric experiment to determine the specific heat capacity of an unknown metal. They heat a 50.0 g sample of the metal to 100.0°C and then place it into 75.0 g of water initially at 20.0°C. The final equilibrium temperature of the water and metal mixture is 25.5°C. The specific heat capacity of water is 4.18 J/(g°C). Which of the following calculations correctly determines the specific heat capacity of the metal?Science
  8. 108.A paleontologist discovers a fossilized footprint trail in a sedimentary rock layer. The trail shows a distinct pattern of bipedal locomotion. In a stratigraphically older (deeper) layer, they find only fossilized remains of four-legged (quadrupedal) creatures. In an even older (deeper) layer, they find no evidence of large vertebrate life. This observation supports the idea that bipedalism evolved after quadrupedalism, and large vertebrate life appeared more recently than simpler life forms. This interpretation is an example of applying which geological principle?Science
  9. 109.A research article examines the long-term effects of early childhood education programs: "Studies consistently show that children who participate in high-quality preschool programs demonstrate significantly better academic outcomes, including higher graduation rates and increased college enrollment. Furthermore, these individuals often exhibit improved social-emotional skills, such as self-regulation and empathy, which contribute to greater civic engagement and reduced instances of criminal behavior in adulthood." Which of the following is an unstated assumption made by the author regarding the benefits of early childhood education?Reading
  10. 110.A literary essay discusses the use of imagery in a poem: "The poet's recurring images of 'shattered glass' and 'flickering shadows' throughout the collection are not merely decorative; they serve as potent visual metaphors for the protagonist's fractured psyche and fleeting grasp on reality. These motifs, woven into the very fabric of the verses, consistently return to underscore themes of instability and delusion." The critic's analysis primarily focuses on which literary device?Reading
  11. 111.A novelist opens a chapter with a detailed description of a vast, desolate desert landscape, emphasizing its silence, endless horizons, and the sheer isolation it imposes. The subsequent narrative introduces a lone traveler struggling across this terrain. What is the most likely effect of beginning the chapter with this extensive setting description?Reading
  12. 112.A student is writing a cause-and-effect essay about climate change. They have written the following two sentences: 1. "Deforestation leads to increased carbon dioxide in the atmosphere." 2. "This excess carbon dioxide traps heat, contributing to global warming." To combine these sentences into one that clearly expresses a cause-and-effect relationship, which of the following revisions is most effective?English
  13. 113.An environmental scientist presents data on local water quality: "Our recent sampling indicates a consistent increase in nitrate levels in Riverbend Creek, exceeding safe limits for aquatic life. This rise correlates directly with the increased use of agricultural fertilizers in the upstream farmlands over the past five years. If these trends continue unchecked, we anticipate a significant decline in fish populations and a proliferation of harmful algal blooms within the next decade." Which of the following statements represents the scientist's primary conclusion?Reading
  14. 114.A team of ecological researchers is monitoring the population of a specific bird species in a protected forest. They capture, band, and release 100 birds in the first year. In the second year, they capture 150 birds, and 10 of them are found to have bands from the previous year. Assuming no significant immigration or emigration, what is the estimated total population of the bird species in the forest?Science
  15. 115.A team of researchers is investigating the effect of a new dietary supplement on muscle growth in athletes. They recruit 100 participants and randomly assign them to two groups. Group A receives the new supplement daily, while Group B receives a placebo. Both groups follow the same training regimen and diet. After 12 weeks, the researchers measure the increase in muscle mass for each participant. What is the most appropriate conclusion if Group A shows significantly greater muscle mass increase than Group B?Science
  16. 116.In a passage discussing the migratory patterns of monarch butterflies, the author frequently uses terms such as 'perilous journey,' 'arduous flight,' and 'fragile existence.' What is the most likely purpose of the author's consistent word choice?Reading
  17. 117.A paleontologist discovers a fossilized footprint trail indicating that a prehistoric animal walked on two legs. In a nearby rock layer, they find skeletal remains of a similar animal, but its bone structure suggests quadrupedal locomotion. Based on this evidence, the paleontologist infers that either two distinct species existed, or the animal underwent a significant evolutionary change in locomotion. This inference is an example of which scientific reasoning process?Science
  18. 118.A student is writing an argumentative essay about the impact of social media on mental health. They have written the following sentence: 'Many studies have shown that excessive social media use is linked to increased anxiety and depression; however, the precise mechanisms are still being investigated.' Which of the following is the most appropriate edit to improve the flow and clarity of this sentence?English
  19. 119.A poet writes: 'The city breathes a sigh of steel and glass, Its concrete veins pulse with hurried light. Beneath the towering giants, shadows pass, And whispers echo through the endless night.' Which literary device is most prominently used in these lines?Reading
  20. 120.A student is writing a research paper and needs to properly integrate a short quotation into their text. They are citing a sentence from a source. Which of the following examples correctly incorporates the quotation using standard academic conventions? Which example correctly integrates the quotation?English
  21. 121.A student is conducting an experiment to determine the effect of different types of music on plant growth. They set up three identical plant pots, each with the same type and amount of soil, plant seeds, and water. Pot A is exposed to classical music for 4 hours daily, Pot B to heavy metal music for 4 hours daily, and Pot C is kept in a quiet room with no music. All pots are exposed to the same amount of sunlight and kept at the same temperature. After 3 weeks, the height of each plant is measured. Which of the following is the most appropriate control for this experiment?Science
  22. 122.A literary critic analyzes a novel's narrative structure: "The author deliberately fragments the narrative, presenting events out of chronological order and shifting perspectives abruptly between multiple unreliable narrators. This disorienting approach, far from being a flaw, compels the reader to actively piece together the puzzle of the plot and question the veracity of each account, thereby deepening the thematic exploration of memory and subjective truth." The critic's primary purpose in this analysis is to:Reading
  23. 123.A business proposal outlines a new marketing strategy: "Our current approach, which relies heavily on traditional print media, has shown diminishing returns over the past three quarters. In contrast, digital advertising campaigns, particularly those targeting social media demographics, have consistently yielded higher engagement rates and conversion metrics. Therefore, we propose a strategic pivot: reallocate 70% of our marketing budget to digital platforms, focusing on interactive content and influencer collaborations, to maximize ROI." The passage is primarily organized to:Reading
  24. 124.A team of researchers is investigating the effect of a new dietary supplement on muscle growth. They recruit 100 participants and randomly assign them to two groups: one receives the supplement, and the other receives a placebo. Neither the participants nor the researchers administering the supplement know who is receiving the actual supplement. After 12 weeks, muscle mass is measured in both groups. Which of the following best describes the experimental design used?Science
  25. 125.A baker uses a recipe that calls for 3 cups of flour for every 2 cups of sugar. If the baker wants to make a larger batch using 7.5 cups of flour, how many cups of sugar will be needed?Mathematics
  26. 126.An architect is designing a circular garden with a radius of 10 feet. If a path of uniform width is to be built around the garden, increasing the total area by 44π square feet, what is the width of the path?Mathematics
  27. 127.A financial analyst is modeling the growth of an investment. If an initial investment of $5,000 grows at an annual rate of 4% compounded quarterly, which of the following expressions represents the value of the investment after 't' years?Mathematics
  28. 128.A quality control engineer is inspecting a batch of 50 circuit boards. If the probability of a single circuit board being defective is 0.05, what is the expected number of defective circuit boards in the batch?Mathematics
  29. 129.A scientist is observing the decay of a radioactive substance. The mass of the substance, in grams, remaining after 't' days is given by the function M(t) = 200 * (0.5)^(t/10). What is the half-life of the substance?Mathematics
  30. 130.A landscape architect is designing a rectangular flower bed. The length of the flower bed is 3 feet more than twice its width. If the perimeter of the flower bed is 30 feet, what is its width?Mathematics
  31. 131.A surveyor is measuring angles for a new construction project. If two parallel lines are intersected by a transversal, and one of the interior angles on the same side of the transversal measures 115 degrees, what is the measure of the other interior angle on the same side?Mathematics
  32. 132.A drone operator is programming a flight path. The drone's altitude (h) in meters above the ground is modeled by the function h(t) = -5t² + 40t + 10, where 't' is the time in seconds after takeoff. What is the maximum altitude the drone reaches?Mathematics
  33. 133.A meteorologist is tracking a storm. The storm's path can be approximated by a line segment between two points on a coordinate plane: (2, 5) and (8, 13). What is the length of this storm's path?Mathematics
  34. 134.A biologist is studying a bacterial population that doubles every 30 minutes. If the initial population is 100 bacteria, which of the following expressions represents the population size after 't' hours?Mathematics
  35. 135.A civil engineer is calculating the stress on a beam. The formula for the stress (S) is S = F/A, where F is the force applied and A is the cross-sectional area. If the force F is increased by 20% and the cross-sectional area A is decreased by 10%, what is the new stress in terms of the original stress S?Mathematics
  36. 136.A chemist is preparing a solution. She needs to dilute a 25% acid solution to a 5% acid solution. If she has 200 mL of the 25% solution, how much water (in mL) must she add to achieve the desired concentration?Mathematics
  37. 137.A scientist is studying a chemical reaction where the concentration of a product, C(t), in moles per liter, at time t hours, is given by C(t) = 5 - 4e^(-0.2t). What is the maximum possible concentration of the product as time approaches infinity?Mathematics
  38. 138.A statistician is analyzing a dataset. If the mean of a dataset is 60 and the standard deviation is 8, what is the z-score for a data point with a value of 76?Mathematics
  39. 139.A chef is adjusting a recipe for a large catering event. The original recipe calls for 2.5 cups of flour and yields 12 servings. If the chef needs to prepare 30 servings, how many cups of flour will be required?Mathematics
  40. 140.A civil engineer is designing a pedestrian bridge. The maximum allowable stress (S) on a support beam is inversely proportional to its cross-sectional area (A). If a beam with a cross-sectional area of 0.5 m² can withstand a stress of 200 kPa, what stress can a beam with a cross-sectional area of 0.8 m² withstand?Mathematics
  41. 141.A financial analyst is comparing two investment options. Option 1 offers an annual interest rate of 4% compounded quarterly. Option 2 offers an annual interest rate of 3.8% compounded continuously. If a principal of $10,000 is invested in each option for 5 years, which option yields a higher return and by approximately how much?Mathematics
  42. 142.A civil engineer is calculating the volume of concrete needed for a cylindrical pillar. The pillar has a radius of 0.5 meters and a height of 4 meters. Using π ≈ 3.14, what is the volume of the concrete pillar in cubic meters?Mathematics
  43. 143.A scientist is studying the growth of a certain type of mold. The area covered by the mold, A, in square centimeters, can be modeled by the function A(t) = 5 * (1.5)^t, where t is the time in hours. What is the initial area covered by the mold when t = 0?Mathematics
  44. 144.A meteorologist is tracking a weather front. The atmospheric pressure (P) at a certain altitude (h) can be modeled by the equation P = 1013 * e^(-0.00012h), where P is in hectopascals (hPa) and h is in meters. What is the atmospheric pressure at an altitude of 5000 meters, rounded to the nearest whole number?Mathematics
  45. 145.A pilot is planning a flight between two cities. City A is located at coordinates (10, 20) and City B is located at (40, 60) on a grid map, where units are in miles. What is the straight-line distance, in miles, between City A and City B?Mathematics
  46. 146.A cartographer is creating a map and needs to scale down a region. A forest that is 15 kilometers long on the ground needs to be represented as 30 centimeters on the map. If a river is 8 kilometers long in reality, how long should it be represented on the map?Mathematics
  47. 147.A research team is studying the population growth of a rare species. The population (P) after 't' years is modeled by the function P(t) = 500 / (1 + 4e^(-0.1t)). What is the carrying capacity (maximum population) of this species?Mathematics
  48. 148.A civil engineer is calculating the stress on a support beam. The stress (S) is directly proportional to the applied load (L). If a load of 500 N produces a stress of 20 MPa, what stress will a load of 750 N produce?Mathematics
  49. 149.A financial analyst is modeling the depreciation of a company's equipment. The value (V) of a piece of equipment after 't' years is given by the formula V = P(1 - r)^t, where P is the initial purchase price and r is the annual depreciation rate. If equipment purchased for $20,000 depreciates at an annual rate of 15%, what will its value be after 3 years?Mathematics
  50. 150.A production manager is reviewing the efficiency of an assembly line. The number of defects per 1000 units produced is normally distributed with a mean of 15 defects and a standard deviation of 3 defects. What is the probability that a randomly selected batch of 1000 units will have between 12 and 18 defects?Mathematics