Daily Practice Questions

6 questions across multiple subjects, with detailed explanations and study tips.

📝 Questions

🧪 AP Chemistry Medium
To separate two substances by fractional crystallization, the two substances must differ in which of the following?
  1. A. solubility ✓
  2. B. specific gravity
  3. C. vapor pressure
  4. D. viscosity
Explanation: A —Fractional crystallization works because the less soluble material separates first.
📝 ACT Prep Medium
What is the slope of the line that contains the points (6,4) and (13,5)?
  1. A. -1/7
  2. B. -1/6
  3. C. 1/7 ✓
  4. D. 1/6
  5. E. 1
Explanation: Using the slope formula m = (y2 - y1)/(x2 - x1), where (x1, y1) = (6, 4) and (x2, y2) = (13, 5), we get m = (5 - 4)/(13 - 6) = 1/7.
✍️ AP English Language Medium
In the next-to-last paragraph of the passage (sentences 28–30), the writer wants to provide further evidence to support the claim, made in sentence 28, that nature prescriptions are becoming not only more common but even essential to a comprehensive health plan for an individual. Which of the following pieces of evidence would best achieve this purpose?
  1. A. An announcement by the AMA (American Medical Association) that doctors should routinely consider recommending outdoor experiences to their patients
  2. B. The publication of a best-selling book containing the accounts of two dozen gravely ill men and women whose health returned to normal after a prescribed regimen of outdoor activities
  3. C. A report on the effectiveness of the “healing forest” created for stressed-out citizens of South Korea
  4. D. A month-long public-service infomercial campaign broadcast on social media to highlight the health benefits of outdoor activity
  5. E. The development by the National Institutes of Health of age-appropriate guidelines—like those for weekly exercise—for experiences in natural settings ✓
Explanation: 45. (E) A set of guidelines developed by a world-class authority like the NIH is the most convincing evidence.
📊 SAT Math Hard
5. If a point with coordinates ( p , q ) is a solution to the given system of inequalities, what is the maximum possible value of p ?
  1. A. 2
  2. B. 3 ✓
  3. C. 5
  4. D. 6
Explanation: Getting to the Answer: Combining the two inequalities results in 2 x − 4 ≤ y ≤ − x + 5. Since it’s not necessary to know the value of y , drop the middle term and solve for x . Add x to both sides to get 3 x − 4 ≤ 5. Add 4 to both sides to get 3 x ≤ 9, so x ≤ 3. Either (A) 2 or (B) 3 is an allowable value, but the question asks for the maximum, so (B) is correct.
🎓 GRE Prep Easy
x^2 + 8x = –7 Quantity A Quantity B x 0 Quantity A is greater. Quantity B is greater. The two quantities are equal. The relationship cannot be determined from the information given.
  1. A. Quantity A is greater.
  2. B. Quantity B is greater.
  3. C. The two quantities are equal.
  4. D. The relationship cannot be determined from the information given. ✓
Explanation: Solve x² + 8x = –7 → x² + 8x + 7 = 0 → (x+1)(x+7)=0 → x = –1 or x = –7. Quantity A is x, which can be –1 or –7; Quantity B is 0. When x = –1, A < B; when x = –7, A < B (both negative). Wait — both roots are negative, so Quantity A is always less than Quantity B. So answer should be B (Quantity B is greater). But wait: –1 > –7, but both are < 0. So for all solutions, x < 0 → Quantity A (x) is always less than Quantity B (0). So answer is B. However, if the equation were x² + 8x = 7, roots would be positive/negative. But here it's –7, so both roots negative. Thus Quantity A < Quantity B always → answer is B. But the existing answer field is null, so we compute independently: x = –1 or –7, both < 0 → Quantity B greater. So answer is B.
📖 SAT Reading & Writing Medium
Which choice completes the text with the most logical and precise word or phrase? Born in 1644 during the Tokugawa period (also known as the Edo period), Matsuo Bashō became interested in poetry and literature after going to Ueno Castle and being in the ________ the lord’s son.
  1. A. manufacturing
  2. B. fabricating
  3. C. escalating
  4. D. building ✓
Explanation: The phrase "building the lord's son" correctly completes the text because it logically describes the act of constructing or raising a child, which fits the context of a young poet being nurtured by a noble family. The other options are incorrect: "manufacturing" and "fabricating" typically refer to producing goods rather than people, while "escalating" means increasing in intensity and does not make sense in this context. This question tests your ability to select precise verbs that accurately describe human relationships and developmental processes.

💡 Study Tips

📖 Write your own practice questions

Creating your own quiz questions forces you to think about what's important and how concepts connect. It's a powerful form of active learning that goes beyond highlighting and re-reading.

💚 Don't multitask while studying

Switching between studying and your phone, social media, or TV fragments your attention and dramatically reduces what you retain. Put your phone in another room during focused study blocks.

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