question

to extinguish a laboratory fire you should know a. how to operate a fire extinguisher b. where extinguishers are located c. who is responsible for using the extinguisher d. all of the above

answer

D

question

approved eye protection devices (like goggles) are used in the laboratory a. to avoid eye strain b. to improve your vision c. to wear only if you don't have corrective glasses d. to wear at all times when so instructed by the science teacher

answer

D

question

acid dilutions, with few exceptions, should be done by a. lab assistants b. students c. science instructor d. school principal

answer

C

question

If a laboratory fire erupts, notify your teacher at once, and then a. follow the science teacher's directions b. run for the fire extinguisher c. throw water on the fire d. open the windows

answer

A

question

Flammable materials like alcohol should never be dispensed or used near a. an open door b. an open flame c. another student d. a sink

answer

B

question

If you develop a headache in the laboratory, you should a. take an asprin b. tell the science instructor c. tell your neighbor d. grin and bear it

answer

B

question

If you wear eye contact lenses in the school laboratory, a. take them out before starting the lab b. you do not have to wear protective goggles c. advise your science teacher that you wear contact lenses d. keep the information to yourself

answer

C

question

cleaning up the laboratory is the responsibility of a. students leaving the laboratory b. students entering the laboratory c. all students d. the science teacher

answer

C

question

You are aware that you have allergies, you should a. always wear gloves in the laboratory b. discuss the matter with your science teacher c. let another student handle the experiment d. say nothing to avoid trouble

answer

B

question

spilled acid can be best neutralized with a. paper towels b. water c. alcohol d. sodium bicarbonate solution

answer

D

question

you are heating a substance in a test tube, always point the open end of the tube a. towards yourself b. towards your lab partner c. towards another classmate d. towards no other person

answer

D

question

You are heating a piece of glass and now want to pick it up. You should a. use a rag or paper towels b. use tongs c. wait till it cools d. pour cool water on it

answer

B

question

You have been injured in the laboratory. First you should a. ask to see the school nurse b. see a doctor after school c. tell the science teacher at once d. tell the principal

answer

C

question

A spilled base can be made safe by neutralizing with a. diluted acetic acid solution b. water c. concentrated acid. d. alcohol

answer

A

question

Pipets are used to measure and dispense small amounts of liquids. You should draw the liquid into the pipet by using a. your mouth b. a rubber suction bulb. c. your finger. d. your thumb

answer

B

question

You want to place a piece of glass tubing into a rubber stopper after it has been fire polished and cooled. This is best done by a. lubricating the tubing with water or glycerine b. using a towel for protection c. twisting the tubing and stopper carefully d. all of the above

answer

D

question

eyeglasses provide as much protection as a. a face shield b. safety glasses c. splashproof chemical goggles d. none of the above

answer

D

question

Before you touch an electrical outlet, electrical plug or electrical switch a. ask the school custodial b. your hands must be clean c. your hands must be dry d. ask a fellow student

answer

C

question

Some alcohol has been spilled, what is the best cleanup procedure a. let it evaporate b. tell the science teacher c. clean it up at once d. both b and c

answer

D

question

paper towels or rags with flammable liquids or solid chemicals on them must be put in a. the neared trash can b. a cardboard box c. a wastepaper basket d. a designated chemical waste container with a lid

answer

D

question

Long hair in the laboratory must be a. cut short b. held away from the experiment with one hand c. always neatly groomed d. kept entirely out of the way with a hair band, hairpins, a hairnet, or other confining device

answer

D

question

In a laboratory, you should be cautious of a. loose clothing b. dangling jewelry c. flammable clothing d. all of the above

answer

D

question

The following footwear is best in the laboratory a. sandals b. open toed shoes c. closed shoes d. shoes appropriate for the weather

answer

C

question

Playing (as opposed to working) in the laboratory is A. always against the rules. B. OK C. not dangerous D. OK if you are working at the same time

answer

A

question

Injuries and accidents may result from spills. Always clean them up. a. when you have time. b. at once. c. at the end of class. d. during clean up time

answer

B

question

To put out a fire in a persons hair or clothing, use a. a fire blanket b. water from the sink c. a CO2 fire extinguisher d. anything or any method possible

answer

A

question

All laboratory floors, aisles and passageways should be kept clear of a. teachers and students b. lab equipment and chemicals c. lab equipment only d. chemicals only

answer

B

question

If a piece of equipment is not working properly, stop, turn it off and tell a. the custodian b. your lab partner c. your best friend in the class d. your science teacher

answer

D

question

If an acid is splashed on you or your clothing, wash at once with a. soap b. oil c. weak base d. plenty of running water

answer

D

question

when you finish working with chemicals, biological specimens and other lab substances, always a. treat your hands with skin lotion b. wash your hands thoroughly with soap and water c. wipe your hands on a towel d. wipe your hands on your apron

answer

B

laboratory safety

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