Lab Safety (Hazards)

Question 1

Are extensions cord be used?

Answer 1

no

Question 2

what kind of adaptors is prohibited in the lab?

Answer 2

• cheater adaptor
• Gang plugs

Question 3

what should you pull the plug or the cord?

Answer 3

plug

Question 4

what should you do if a electrical equipment fail to function properly?

Answer 4

disconnect the apparatus

Question 5

What will you use in case of an electric fire?

Answer 5

Carbon dioxide extinguisher (not water)

Question 6

All chemicals in the laboratory must be considered as?

Answer 6

Poison

Question 6

Where should you refer if you have problems regarding the handling and storage of a chemical?

Answer 6

Material Safety and Data Sheet (MSDS)

Question 7

Wearing contact lens is not permitted when working with what chemicals?

Answer 7

• xylene
• acetone
• alcohols
• formaldehyde
• other solvents

Question 8

flammable liquids should be stored how many feet away from heat source?

Answer 8

5 ft

Question 9

can you stire inflammable chemicals in refrigerators?

Answer 9

no

Question 10

Strong acids and alkalis should be stored where?

Answer 10

near the floor with warning sign

Question 11

when will you use bottle carriers?

Answer 11

if chemical is more than 500 mL

Question 12

OSHA requires manufactures and suppliers to provide what onsite for the laboratory personnel?

Answer 12

Material Safety Data Sheets (MSDS)

Question 13

MSDS will specifically include:

Answer 13

• chemical identity
• chemical and common name
• physical and chemical characteristics
• signs and symptoms of exposure
• routes of entry
• exposure limits
• carcinogenic potential
• safe handling procedures
• spill clean-up procedures
• emergency first aid

Question 14

the outside of containers should be wiped with what?

Answer 14

alcohol swab

Question 15

can be one of the most toxic sources of exposure to personnel in the laboratory

Answer 15

Ionizing radiation

Question 16

pregnant women must not work with?

Answer 16

radioactive substances

Question 17

There should be a placement of fire extinguishers every what feet?

Answer 17

75 ft

Question 18

placement of fire detection systems should be tested every when?

Answer 18

3 months

Question 19

these are written fire prevention and response procedures

Answer 19

fire response plan

Question 20

fire drills should be done how many times in a year?

Answer 20

quarterly

Question 21

checking of fire extinguisher should be done how many times?

Answer 21

at least once a year

Question 22

in case of a fire accident what should you do to prevent draft?

Answer 22

close all doors and windows

Question 23

what should you use for small blaze

Answer 23

sand or waterand a fire blanket

Question 24

what should you use for larger blaze?

Answer 24

fire extinguisher

Question 25

when escaping fire, what is safest way of evacuating?

Answer 25

crawling and staying close to the floor

Question 26

what should you do to reduce the danger of inhaling flame

Answer 26

cover your mouth and nose

Question 27

ordinary combustibles such as wood, paper and cloth belong to what class of fire?

Answer 27

Class A

Question 28

flammable liquids, gases or grease belong to what class of fire?

Answer 28

Class B

Question 29

electrical equipment, motors and switches belong to what class of fire?

Answer 29

Class C

Question 30

flammable metals such as magnesium belong to what class of fire?

Answer 30

Class D

Question 31

What should you use for Class A fires?

Answer 31

- pressurized water - dry-chemical extinguishers

Question 32

What should you use for Class C fires?

Answer 32

Dry chemical and carbon dioxide extinguishers

Question 33

What should you use for Class D fires?

Answer 33

Special dry-chemical extinguishers (firefighters only)