Chemistry Practice Test, Che102 Practice Final Exam

50 Questions | Total Attempts: 94

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Chemistry Practice Test, Che102 Practice Final Exam - Quiz

Chemistry practice Test


Questions and Answers
  • 1. 
    The difference between an alkane and alkene is
    • A. 

      Alkanes are bigger

    • B. 

      Alkenes contain at least one double bond

    • C. 

      Alkanes contain at least one double bond

    • D. 

      Alkenes are bigger

  • 2. 
    The best test to differentiate between an alkane and an aromatic hydrocarbon is
    • A. 

      Combustion

    • B. 

      Reaction with bromine

    • C. 

      Solubility in ligroin

    • D. 

      Solubility in water

  • 3. 
    A hydrocarbon is burned on a watchglass. There is no black smoke observed and nothing remaining on the watchglass. Which type of hydrocarbon is this?
    • A. 

      Alkane

    • B. 

      Alkene

    • C. 

      Aromatic

    • D. 

      Either an alkane or aromatic

  • 4. 
    When an alkene reacts with bromine, Br2, the type of reaction occurring is called
    • A. 

      Combustion

    • B. 

      Addition

    • C. 

      Hydrolysis

    • D. 

      Neutralization

  • 5. 
    Water is added to two test tubes. Toluene is added to one and hexane is added to the other. What would you expect to observe in the test tubes?
    • A. 

      Both are soluble in water

    • B. 

      Bhexane is soluble but toluene is not soluble

    • C. 

      Toluene is soluble but hexane is not soluble

    • D. 

      Neither hexane or toluene are soluble in water

  • 6. 
    The black balls in the model kits used to represent organic molecules have four holes because
    • A. 

      They represent nitrogen, which makes four bonds

    • B. 

      All atoms in organic molecules make four bonds

    • C. 

      Four holes are needed to make multiple bonds

    • D. 

      They represent carbon, which makes four bonds

  • 7. 
    In organic compounds, hydrogen makes
    • A. 

      One bond

    • B. 

      Two bonds

    • C. 

      Three bonds

    • D. 

      Four bonds

  • 8. 
    Iron (III) chloride produces a purple color in the presence of
    • A. 

      1-butanol

    • B. 

      2-butanol

    • C. 

      2-methyl-2-propanol

    • D. 

      Phenol

  • 9. 
    A Lucas test produces cloudiness immediately for an unknown.  The unknown can be
    • A. 

      1-butanol

    • B. 

      2-butanol

    • C. 

      Tertiary butanol

    • D. 

      Phenol

  • 10. 
    An unknown liquid is tested with chromic acid. The result is a blue-green solution. Based on this test result, what type of compound could this be?
    • A. 

      Ketone

    • B. 

      3o alcohol

    • C. 

      1o alcohol

    • D. 

      Alkane

  • 11. 
    In organic compounds, oxygen makes
    • A. 

      One bond

    • B. 

      Two bonds

    • C. 

      Three bonds

    • D. 

      Four bonds

  • 12. 
    Which alcohol produces a yellow precipitate in the presence of iodine when heated under basic conditions, and gives a blue-green color in the presence of chromic acid.
    • A. 

      1-butanol

    • B. 

      Phenol

    • C. 

      Tertiary butanol

    • D. 

      2-butanol

  • 13. 
    A student is trying to identify a 3o alcohol from possible 1o, 2o, and 3o alcohols. Which of these tests will be most helpful in making the identification?
    • A. 

      Ferric Chloride test

    • B. 

      Iodoform test

    • C. 

      Lucas test

    • D. 

      Ceric Nitrate test

  • 14. 
    The iodoform test would be positive for
    • A. 

      1-butanol

    • B. 

      2-butanone

    • C. 

      3-pentanone

    • D. 

      Toluene

  • 15. 
    The following compound would give a positive Tollen’s test. True or False? 
    • A. 

      True

    • B. 

      False

  • 16. 
    A student is given three tubes.  One contains 2-butanol; another contains 2-butanone; the final one contains cyclohexene.  What combination of two tests would clearly identify each substance?
    • A. 

      Bromine and Ferric chloride tests

    • B. 

      Bromine and Iodoform tests

    • C. 

      Ceric nitrate and Ferric chloride tests

    • D. 

      Ceric nitrate and Iodoform tests

  • 17. 
    Chromic Acid is
    • A. 

      An oxidizing agent

    • B. 

      A reducing agent

    • C. 

      A combustion reagent

    • D. 

      An addition agent

  • 18. 
    An unknown organic substance gives a negative ferric chloride test, a positive ceric nitrate test, a positive chromic acid test and a positive iodoform test.  The unknown is
    • A. 

      1-butanol

    • B. 

      2-butanol

    • C. 

      2-butanone

    • D. 

      Phenol

  • 19. 
    Sucrose and lactose are
    • A. 

      Monosaccharides

    • B. 

      Polysaccharides

    • C. 

      Disaccharides

    • D. 

      Trisaccharides

  • 20. 
    It is known that sucrose hydrolyzed because
    • A. 

      The hydrolysis product gave a negative Benedict’s test

    • B. 

      The hydrolysis product gave a positive Benedict’s test

    • C. 

      When iodine was added it turned blue-black

    • D. 

      When iodine was added it remained yellow-brown

  • 21. 
    Benedict’s reagent gives a positive test for glucose.  The following is true
    • A. 

      Glucose is reduced and the copper ions are oxidized

    • B. 

      Glucose is oxidized the copper ions are reduced

    • C. 

      Both glucose and the copper ions are reduced

    • D. 

      Both glucose and the copper ions are oxidized

  • 22. 
    A solution of starch has been fully hydrolyzed. When some I2 is added to the solution what will the resulting color be?
    • A. 

      Blue-black

    • B. 

      Colorless

    • C. 

      Green

    • D. 

      Yellow

  • 23. 
    In the hydrolysis of sucrose, the most effective catalyst was
    • A. 

      Water

    • B. 

      Base

    • C. 

      Acid

    • D. 

      Sucrose

  • 24. 
    Why is ferric chloride used to determine the purity of the aspirin produced in lab?
    • A. 

      The starting material has a phenol group, but aspirin does not

    • B. 

      Aspirin contains a phenol group in its structure

    • C. 

      Aspirin is soluble in ferric chloride

    • D. 

      The ferric chloride test cannot help determine the purity of the aspirin

  • 25. 
    The differences in the solubility properties of acetic acid and benzoic acid are primarily due to
    • A. 

      Smell

    • B. 

      Size

    • C. 

      Hydrolysis in water

    • D. 

      There was no difference in the solubility properties

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