Daily Practice Questions

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

📝 Questions

🧪 AP Chemistry Easy
Table 1: Li+ 90, Na+ 116, K+ 152, Rb+ 166 Based on the data in Tables 1–4, which of the following pairs of ions would exhibit the greatest electrostatic force of attraction?
  1. A. Li ^{+} and F ^{−}
  2. B. Rb ^{+} and I ^{−}
  3. C. Be ^{2+} and O ^{2−} ✓
  4. D. Sr ^{2+} and Te ^{2−}
Explanation: Be2+is the cation of smallest radius and it has a 2+ charge. O2−is also has a small radius and it has a 2− charge.The force of attraction between charges is proportional to the product of the quantity of the charges and inversely proportional to the square of the distance between them.The larger charges (2+) of the ions coupled with the smalldistance between them (due to their small radii) would produce the greatest force of attraction. (See the Coulomb’s law box onpage 227.)
⚛️ AP Physics C Easy
A point charge − q is released from rest at the center of a parallel plate capacitor, as shown. Note that the plates have small holes that allow the charge to exit the capacitor. Which of the following statements describes the charge’s behavior a long time after it exits the capacitor?
  1. A. It is moving to the right with a kinetic energy of KE = qV .
  2. B. It is moving to the left with a kinetic energy of KE = qV .
  3. C. It is moving to the right with a kinetic energy of KE = qV /2.
  4. D. It is moving to the left with a kinetic energy of KE = qV /2. ✓
  5. E. It never reaches a constant velocity but instead continually oscillates in and out of the capacitor.
Explanation: The negative charge $-q$ is attracted toward the positive plate, accelerating through the potential difference $V$ and exiting the capacitor with a kinetic energy of $KE = |q|V$. Upon exiting, it enters the region outside the plates where there is no electric field, so it travels in a straight line until it hits the opposite (negative) plate. It then accelerates back toward the positive plate, re-entering the capacitor and repeating this cycle indefinitely; therefore, it continually oscillates rather than reaching a constant velocity or moving permanently to one side.
📖 SAT Reading & Writing Medium
Which choice completes the text with the most logical transition? While researching a topic, a student has taken the following notes:
  1. A. Also,
  2. B. Granted,
  3. C. Instead, ✓
  4. D. Additionally,
Explanation: The transition "Instead" is correct because it signals a shift from the student's initial research plan to an alternative approach or a different topic entirely, which fits the logical flow of notes where one idea replaces another. Choices like "Also," "Granted," and "Additionally" are incorrect because they imply continuation or agreement with the previous thought rather than introducing a contrasting action or direction.
✍️ AP English Language Medium
The writer wants to rephrase the beginning of sentence 11 (reproduced below), adjusting the capitalization as needed, for the purpose of more fully explaining the relevance of ideas expressed in sentences 9 and 10.
  1. A. (keep it as it is)
  2. B. Of sociological interest to researchers is generally
  3. C. This structure allows sociologists to study the dynamics of ✓
  4. D. Since power in this structure is unevenly divided, sociological researchers study
  5. E. As a consequence of this configuration,
Explanation: is the best answer because it provides clarity and coherence to a series of diverse ideas regarding the main subject of the passage.
🎓 GRE Prep Easy
x > 0 Quantity A Quantity B 0.25% of x
  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: Since $x$ is only known to be greater than 0, its specific value could be very small (e.g., $x=1$) or very large (e.g., $x=1000$). If $x=1$, Quantity A ($0.25\%$) is smaller than Quantity B ($0.25$), but if $x=1000$, Quantity A ($2.5$) is larger than Quantity B ($0.25$). Because the relationship changes depending on the value of $x$, the correct answer is (D).
📊 SAT Math Hard
6. If to correct for an error, the score for Team Archers was changed to 251, how does the change affect the mean and median score of the teams?
  1. A. Mean and median will both decrease.
  2. B. Mean will decrease, and median will increase.
  3. C. Mean will increase, and median will decrease.
  4. D. Mean and median will both increase. ✓
Explanation: Getting to the Answer: The effect on mean is straightforward; adding 100 points while not changing the number of teams will increase the mean. In order to analyze the effect of the change on the median, start by arranging all the original scores in order: 110, 142, 151, 169, 185, 199, 212, 232. The median is the average of 169 and 185. When the error is corrected, the lowest five scores are 110, 142, 169, 185, and 199. So, the new fourth and fifth terms are 185 and 199. The new median is the average of 185 and 199, so that is an increase. Choice (D) is correct.

💡 Study Tips

📖 Start with the hardest topic first

Your mental energy is highest at the beginning of a study session. Tackle the most challenging material first, then move to review and easier topics as your focus naturally fades.

📖 Space out your study sessions

Studying the same topic across multiple shorter sessions over several days leads to stronger long-term retention than cramming everything into one marathon session. Try 25-minute focused blocks with 5-minute breaks.

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