Ch.1

Question 1

At normal ambient temps (68*F) materials can ignite and burn at oxygen concentrations as low as ______%?

Answer 1

15%

Question 2

What is the ignition temp and vapor density of Methane (natural gas)?

Answer 2

1004 degrees F

0.55

Question 3

Typically an atmosphere having less than ____% oxygen is considered oxygen deficient?

Answer 3

19.5%

Question 4

What are the flammable ranges for carbon monoxide?

Answer 4

12% - 75%

Question 5

What are the flammable ranges for gasoline and diesel?

Answer 5

Gasoline-1.4% -7.4%

Diesel - 1.3% -6%

Question 6

What is the ignition temp and vapor density of propane (LPG)?

Answer 6

842 degrees F
1.52 (vapor density )

Question 7

What are the 5 common oxidizers?

Answer 7

Calcium hypochlorite
Chlorine
Ammonium nitrate
Hydrogen peroxide
Methyl ethyl ketone peroxide

Question 8

What are the flammable ranges for methane ?

Answer 8

5%-15%

Question 9

What is the ignition temp and vapor density of carbon monoxide?

Answer 9

1128 degrees F

0.96 (vapor density)

Question 10

Greg quantity of heat required to change the the temperature of 1 gram of water by 1 degree Celsius is?

Answer 10

4.2 joules

Question 11

What are the flammable ranges for propane ?

Answer 11

2.1% -9.5%

Question 12

Gasoline auto ignition temperature?

Answer 12

853 degrees F

Question 13

1 calorie is equal to how many joules ?

Answer 13

1 calorie = 4.19 joules

Question 14

Normally , air consists of about ____% oxygen?

Answer 14

21%

Question 15

Form of fire gas ignition , of accumulated flammable products of combustion and air that are within their flammable range?

Answer 15

Smoke explosion

Question 16

The chemical decomposition of a solid material by heating?

Answer 16

Pyrolysis

Question 17

The auto ignition temperature of CO , the most abundant fuel gas created in most fires is approximately ______degrees F?

Answer 17

1100 degrees F

Question 18

When oxygen concentration in atmosphere exceeds _____ % the atmosphere is considered oxygen enriched , presenting increased fire risk?

Answer 18

23.5%

Question 19

_________ is the rate at which energy transfers ?

Answer 19

Power