Daily Practice Questions

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

📝 Questions

🧪 AP Chemistry Medium
Regular tetrahedral molecules or ions include which of the following?
  1. A. SO _{2}
  2. B. NH _{4} ^{+} ✓
  3. C. XeF _{4}
  4. D. ICl _{4} ^{–}
Explanation: B —One or more Lewis structures may help you. A is an irregular tetrahedron (see-saw); C and D are square planar.
🎯 GMAT Prep Easy
What is the volume of a certain rectangular solid?
  1. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  2. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  3. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  4. D. EACH statement ALONE is sufficient. ✓
  5. E. Statements (1) and (2) TOGETHER are not sufficient.
Explanation: Statement (1) provides the dimensions of the base and the height, which allows you to calculate volume directly using $V = \text{length} \times \text{width} \times \text{height}$. Statement (2) gives the area of the base and the height, which is also sufficient because multiplying these two values yields the volume. Since each statement independently provides all necessary information to solve for the volume, EACH statement ALONE is sufficient.
🎓 GRE Prep Easy
What is the value of x in the equation (x + 4)(x – 7) = 0?
  1. A. x = –4 or x = 7 ✓
  2. B. x = 4 or x = –7
  3. C. x = 4 or x = 7
  4. D. x = –4 or x = –7
Explanation: The equation (x + 4)(x – 7) = 0 equals zero when either factor is zero: x + 4 = 0 → x = –4, or x – 7 = 0 → x = 7.
⚛️ AP Physics C Medium
A mass is moved by a nongravitational force (of unknown magnitude and direction) from point A to point B within a known gravitational field. Which of the following is true?
  1. A. The change in the object’s kinetic energy depends only on its mass and the locations of points A and B.
  2. B. The change in the object’s kinetic energy depends only on its mass and the path taken between points A and B.
  3. C. The change in the object’s kinetic energy is equal to the work done by the external force, W = ∫ F ⋅ d r .
  4. D. The total energy (kinetic plus potential) of the mass is constant.
  5. E. The object’s potential energy depends only on its mass and the locations of points A and B. ✓
Explanation: 8. (E) Because a nonconservative force (the applied force) is present, energy is not conserved, eliminating choice (D). Therefore, the change in the kinetic energy depends on both the change in the gravitational potential energy and the work done by the applied force, eliminating choices (A) and (B) (which do not allow for calculation of the work by the unknown applied force), and choice (C) (which does not allow for calculation of the change in the potential energy). Finally, choice (E) is correct: The gravitational potential energy depends only on the mass and the initial and final points of the path. (Because gravity is a conservative force, it is path independent.)
📝 ACT Prep Medium
Passage III is adapted from the article "Conquering Jazz" by Patrick Tyrrell (© 2006 by Patrick Tyrrell). The author implies that F-sharp minor-7 flat-5 is an example of a chord that he:
  1. A. had little trouble decoding now that he had "The Real Book."
  2. B. had previously only seen during his travels abroad.
  3. C. knew how to play on guitar but not on a piano.
  4. D. initially found confusing and struggled to understand. ✓
Explanation: The author describes the chord "F-sharp minor-7 flat-5" as an example of complex jazz harmony that he initially found difficult to decipher before obtaining "The Real Book." This implies he previously struggled with such theoretical concepts, making option (D) the only choice that aligns with his initial confusion. Options (A), (B), and (C) are incorrect because they contradict the passage's emphasis on his past difficulty in understanding these specific chords without the reference guide.
💻 AP Computer Science A Hard
The following shuffle algorithm is used to shuffle an array of int values, nums .
  1. A. 8 ✓
  2. B. 7
  3. C. 6
  4. D. 5
  5. E. 4
Explanation: The values of k are, consecutively, 4, 3, 2 , and 1 . The values of randPos are, consecutively, 3, 2, 0 , and 0 . Thus, the sequence of swaps and corresponding states of nums will be:

💡 Study Tips

🎯 Read the question before the passage

On reading-heavy sections like the ACT and AP English exams, skim the questions first. Knowing what you're looking for turns passive reading into active searching, saving time and improving accuracy.

🎯 Time yourself on practice tests

Practicing under timed conditions builds your pacing instincts for test day. If you consistently run out of time on a section, adjust your strategy: spend less time on hard questions and secure the ones you know.

← Previous Day Next Day →

Want personalized practice?

Sign up for free to get adaptive questions tailored to your skill level.

Get Started Free