OAT Online Practice Questions and Answers

Correct Answer: D

This is a conceptual problem on rotational kinematics. Both guys will take the same time to make the full circle. Guy 2 however will travel at a greater velocity than Guy 1, as he is more outward from the center.

Correct Answer: C

This is a conceptual question that provides additional information to throw you off. Angle of incidence = Angle of reflection.

Correct Answer: B

Start with 32. If you half it, that is 16. One eighth of 32 is 4. Thus the difference between these numbers is

12.

Proceed to 40. Half of 40 = 20. One eighth of 40 is 5. Thus, the difference is 20 - 5 = 15, which is the answer.

Correct Answer: D

It will cost $88 to paint an area of 90 square feet (9 ft × 10 ft). The new wall has 630 square feet (21 ft × 30 ft). Thus, the new area is 7x bigger (630 square feet / 90 square feet = 7), and thus, 7x more expensive.

7 × $88 = $616

Correct Answer: D

1 1/2 × 3 = 4 1/2.

Correct Answer: A

The smooth ER is responsible for synthesizing components of the plasma membrane along with lipids (steroids) such as testosterone that act as hormones in the body. It is critical to be familiar with the cell organelles and their function as it is expected to be a question in the biology section.

Correct Answer: C

All other answers are indeed monosaccharides. Dextrose and glucose are the same thing.

Correct Answer: B

Logically you should be aware the answer is going to be a low 10 number due to the vast abundance of the 10 atom. However, to calculate it mathematically: (0.80 × 10) + (0.15 × 11) + (0.05 × 12) = 10.25

Correct Answer: D

The entire compound has a charge of 0. Thus, giving Na's +1 oxidation state: 1 + 3x = 0

The 3x represents the nitrogen (3 of them, x being the unknown oxidation number), the 1 represents the +1 oxidation number of Na and finally the 0 being the neutral charge of the entire compound. Solving for x:

3x = -1 x = -1/3

Correct Answer: C

Periodic trends such as ionization energy, electronegativity, atomic radii, basicity etc. are very important to know as they are commonly tested topics. It is also important to recognize the groups in the periodic table such as the Metals, Non- metals and Metalloids. Only choice (C) provides an element from each group. Lithium (Metal), Hydrogen (Non-metal) and Silicon (Metalloid).