Practice Quiz

PCAT Review Questions - Pharmacy College - Question List

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46. The half-life of 32 grams of a radioactive substance is 6.5 hours. How many grams of the substance remain after 19.5 hours?
  1. 16 grams
  2. 8 grams
  3. 4 grams
  4. 2 grams
  5. 32 grams
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47. Which of the following acids is classified as weak?
  1. CH3COOH
  2. HCl
  3. HBr
  4. HClO4
  5. H2SO4
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48. What is the oxidation state of chlorine in potassium perchlorate, KClO4?
  1. -7
  2. -3
  3. 0
  4. 3
  5. 7
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49. Which of the following compounds contains a double bond?
  1. C2H6
  2. C2H4
  3. C3H8
  4. CH4
  5. C4H10
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50. A 40.0 gram sample of a radioactive element decays to 5.0 grams in 15 hours. What is the half-life of this element?
  1. 3 hours
  2. 2 hours
  3. 6 hours
  4. 7.5 hours
  5. 5 hours
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