Free Test Prep OAT Exam Questions

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Total 280 Questions | Updated On: Jan 28, 2026

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Question 1

Which of the following violates the conditions of a population under Hardy-Weinberg equilibrium?

A : Population is large.

B : There are no mutations occurring.

C : Sexual selection

D : There is no immigration or emigration occurring.

E : Random mating

Answer: C

Question 2

A bat uses echolocation to identify objects. A bat is traveling to west emits a sound (also heading towardsthe west) to a stationary object. Which of the following is most accurate in regards to the Doppler effect?

A : Frequency will be the same.

B : Frequency will be higher than the originally emitted one.

C : Frequency will be lower than the originally emitted one.

D : Frequency will not return.

E : Cannot determine

Answer: B

Question 3

Three consecutive prime numbers add up to 223. What is the smallest of these numbers?

A : 61

B : 67

C : 68

D : 71

E : 79

Answer: D

Question 4

Which of the following statements about electricity flowing through a circuit can be correctly derived from Ohm’s law?

A : Increasing the voltage decreases the current if the resistance remains unchanged.

B : Increasing the current and the resistance decreases the voltage

C : Increasing the current increases the voltage if the resistance is uncharged.

D : Decreasing the resistance increases the current if the voltage remains uncharged

Answer: C

Question 5

A 10 kg box is sitting on a frictionless inclined plane at an angle 10 degrees above the horizontal. Whatforce must Mark apply to the box to prevent it from moving?

A : 100sin10 N

B : 10sin10 N

C : 10sin100 N

D : 100sin100 N

E : Cannot be determined.

Answer: A

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Total 280 Questions | Updated On: Jan 28, 2026

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