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ANSWER THE FOLLOWING QUESTIONS. WRITE THE LETTER OF THE CORRECT ANSWER.
Which of the following statements about contamination of chemicals is NOT true?
a. stoppers and corks must not touch the surface of the lab station
b. stirring rods must be rinsed and dried before using them on other chemicals
c. extra, unused chemicals must be returned to their stock container
d. stoppers, corks and lids must be replaced immediately after removing chemicals from their stock container
e. spoons, spatulas and scoopulas must only be used with one chemical
All of the following should be included in a lab report EXCEPT:
a. error
b. purpose
c. cost
d. conclusions
e. data
What type of laboratory waste bin should materials contaminated by chemicals be disposed of properly?
a. biodegradable waste bin
b. non-biodegradable waste bin
c. recyclable waste bin
d. biologically contaminated waste bin
e. chemically contaminated waste bin
What unit is on a graduated cylinder?
a. millimeter
b. ounces
c. kiloliter
d. liter
Which piece of laboratory equipment can be used to store chemicals for long periods of time?
a. buret
b. evaporating dish
c. beaker
d. more than one of the above
Which of the following type(s) of Personal Protective Equipment (PPE) is/are frequently used?
a. Face mask
b. Gloves
c. Lab gown
d. All of the above
What is the best instrument for measuring volume of the equipment listed below.
a. Beaker
b. Erlenmeyer flask
c. Buret
d. Evaporating dish
When diluting an acid with water, always remember to:
a. Pour water into acid
b. Pour acid into water
c. Add both at the same time

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