Test Prep OAT Online Practice Questions and Exam Preparation

Test Prep OAT Online Questions & Answers

• Question 141:

  Stefan's scores on his English essays were 75, 65, 80, 95, and 65. What is the average of his test scores?

  A. 66
  B. 71
  C. 65
  D. 76
  D. 76

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  (75 + 65 + 80 + 95 + 65) / 5 = 76.

• Question 142:

  Which of the following has the highest melting point?

  A. Ethane
  B. 2,2-Dimethylpropane
  C. Propane
  D. Butane
  E. Pentane
  B. 2,2-Dimethylpropane

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  The general trend is the higher # of carbons, the higher the boiling point and melting point. There is a specific rule for this however that involves symmetry and branching. If the compound has branching and symmetry, then it has a higher melting point than its non-branched and symmetrical counterpart, which, in this example, 2,2-dimethylpropane (having 5 carbons) and pentane (also having 5 carbons, but lacking any branches).

• Question 143:

  What is the product of 0.34 × 0.06?

  A. 0.0204
  B. 2.04
  C. 0.204
  D. 20.4
  A. 0.0204

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  The product of 0.34 and 0.06 is 0.0204. Remember to count the number of places to the right of the decimal.

• Question 144:

  Which of the following are not part of Huckel's criteria for aromaticity?

  A. Be cyclic.
  B. Have one 2p orbital on each atom of the ring.
  C. Be planar.
  D. (4n+2) electrons
  E. All of the above are part of Huckel's criteria.
  E. All of the above are part of Huckel's criteria.

• Question 145:

  What is the value of r in the following equation? 29 + r = 420

  A. r = 29/420
  B. r = 420/29
  C. r = 391
  D. r = 449
  C. r = 391

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  29 + r = 420 29 + r - 29 = 420 ?29 r = 391

• Question 146:

  Which of the following is false in regards to arthropods?

  A. They are a class of invertebrates.
  B. They possess a chitinous exoskeleton.
  C. All arthropods are aerobic organisms.
  D. It possess a tracheal system for respiration.
  E. None of the above.
  E. None of the above.

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  All characteristics in the answer choices are true of arthropods (insects).

• Question 147:

  Which of the following are not functions of bones in the human body?

  A. Movement
  B. Protection
  C. Hematopoiesis
  D. Reservoir of minerals
  E. All of the above are correct functions.
  E. All of the above are correct functions.

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  Bone acts as levers in the body that conducts movement via the attached muscles. Bone also serves a protection function of internal organs (ex. skull protects the brain, vertebra protects the spinal cord). Hematopoiesis occurs in the bone marrow of the bone. Bone is also a reservoir of minerals as it contains approximately 99% of the body's calcium and 85% of the body's phosphorus.

• Question 148:

  Which of the following gives the correct order of electromagnetic radiation from the lowest frequency to the highest frequency?

  A. microwaves, UHF radio waves, x-rays, visible light
  B. UHF radio waves, microwaves, visible light, x-rays
  C. microwaves, visible light, x-rays, UHF radio waves
  D. microwaves, x-rays, visible light, UHF radio waves
  B. UHF radio waves, microwaves, visible light, x-rays

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  Radio waves have the lowest frequency and the longest wavelength. Microwaves also have low frequencies and long wavelengths compared to visible light. X-rays are highly energetic and have higher frequencies and smaller wavelengths than visible light.

• Question 149:

  Express 8% as a fraction.

  A. 4/25
  B. 4/100
  C. 2/50
  D. 2/25
  D. 2/25

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  8% = 8/100 = 2/25.

• Question 150:

  Three different objects have the same velocity, and the same mass of 20 kg. Which of the following attributes will these objects have the same value for?

  A. Momentum
  B. Density
  C. Acceleration
  D. Diameter
  E. Cannot be determined
  A. Momentum

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  Objects with the same mass and velocity mean they will have the same value for their momentum, as momentum is measured via: mass ?velocity.