Safety

Question 1

Which two chemicals when combined cause an explosion?

Answer 1

Lime and Alum

Question 2

Lab glassware should be?

Answer 2

Flame proofed

Question 3

Which fire extinguisher is used for electrical fires?

Answer 3

C

Question 4

Who can enter a confined space with an explosive atmosphere to rescue a fallen worker?

Answer 4

no one

Question 5

What is worn when entering a room containing chlorine gas?

Answer 5

SCBA

Question 6

Excavations over 5 feet deep must be?

Answer 6

Shored

Question 7

Before working on a pump what must be done?

Answer 7

Lock out and tag out, also read the manufactures manual

Question 8

How should potassium permanganate be stored?

Answer 8

Away from heated pipes

Question 9

What do you give someone who swallowed chlorine?

Answer 9

milk or peppermint spirits

Question 10

What do you give someone who swallowed fluoride?

Answer 10

milk or water

Question 11

How far apart form a workman in a trench must a ladder be?

Answer 11

25’ feet

Question 12

What is the PEL for chlorine?

Answer 12

5 ppm eight hour weighted average

Question 13

How many ppm of chlorine is IDLH?

Answer 13

10

Question 14

What percent of chlorine in the atmosphere will kill you in seconds?

Answer 14

0.10% or 1,000 ppm

Question 15

What is the most common cause of chlorine leaks?

Answer 15

Failure to change the lead washer

Question 16

What is the first indication of a carbon fire?

Answer 16

Heat

Question 17

Never add water into____?

Answer 17

Acid

Question 18

What can issue/write a confined space permit?

Answer 18

Competent person

Question 19

What is the first thing you should do before entering a confined space?

Answer 19

Test atmosphere

Question 20

What is the most dangerous powder found at a water plant?

Answer 20

powdered activated carbon