Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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When
you find an unlabeled bottle of chemical in the lab, you should: a. | Smell it to see
what it is. | b. | Ask your teacher. | c. | Waft (smell) the
chemical. | d. | Pour it down the drain. | | |
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2.
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If
you break a beaker in the lab, the first thing you should do is: a. | Tell your
teacher. | b. | Clean up the glass. | c. | Put the broken
glass in a separate container labeled broken glass. | d. | Carefully use
your hands to pick up the largest pieces. | | |
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3.
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When
you complete your lab work, which of the following should you not do: a. | Clean &
return materials to the lab cart. | b. | Try your own experiment. | c. | Turn in all lab
work to your teacher. | d. | Return to your own seat. | | |
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4.
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Which
of the following procedures is not correct: a. | Add acid to
water. | b. | Pipette by mouth. | c. | Keep flammables
away from open flames. | d. | Never use chipped glass. | | |
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5.
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What
is the most important thing to do before starting a lab: a. | Put on
goggles. | b. | Put on your lab apron. | c. | Pick up your
materials from the lab cart. | d. | Read the entire lab. | | |
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6.
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When
heating liquids in test tubes: a. | Always tightly cork the test tube. | b. | Hold the test
tube pointing upward. | c. | Hold test tubes at a slant pointed away from
everyone. | d. | None of the above. | | |
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7.
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Which
of the following is true about heating glass? a. | Only use glassware marked Kimex. | b. | Only use
glassware marked Pyrex. | c. | Both A & B are correct. | d. | Always ask the
teacher if the container can be heated. | | |
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8.
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Which
of the following is correct procedure? a. | Place heated glassware on countertops away from the
edge. | b. | Hold dissecting specimens tightly with your hand when cutting
with a scalpel. | c. | Wear gloves when dissecting & dispensing irritating
chemicals. | d. | Pour excess chemical back into its original
container. | | |
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9.
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Which
of the following statements is correct? a. | Never use cracked glassware. | b. | Wash hands
before & after dissecting. | c. | Treat all chemicals as poisonous. | d. | All of the
above. | | |
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10.
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When
inserting glass tubing into stoppers: a. | Use glycerin & a twisting motion. | b. | Hold the stopper
tightly as you push the glass tubing into the stopper. | c. | Insert the
tubing into the stopper under water. | d. | Always ask you teacher to insert the glass tubing for
you. | | |
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