Gas and combustion

Question 1

What are hydrocarbons made up of mainly

Answer 1

Hydrogen and carbon atoms

Question 2

As a gasfitter, you are concerned mainly with

Answer 2

Methane and propane

Question 3

Two factors that influence the state of matter, how it exists

Answer 3

Temperature and pressure

Question 4

What is waters boiling point

Answer 4

212 Fahrenheit

Question 5

Boiling point of water increases when

Answer 5

At higher pressures

Question 6

When pressure increases, the boiling temperature will increase true or false

Answer 6

True

Question 7

Propane, liquid boils and expands 270 times its original volume true or false

Answer 7

True

Question 8

Standard atmospheric pressure is

Answer 8

14.7 pounds per square inch.

Question 9

The relationship between volume and weight is called

Answer 9

Density

Question 10

Relative density is specific to

Answer 10

Gravity

Question 11

What’s STP stand for

Answer 11

Standard temperature pressure

Question 12

Heat energy required to raise temperature

Answer 12

1 pound of fresh water for 1 Fahrenheit

Question 13

Heat energy for methane gas

Answer 13

1000

Question 14

Heat energy for propane, gas

Answer 14

2500

Question 15

Manufacturer of appliance will always

Answer 15

Give maximum amount of energy, BTU

Question 16

How many different elements?

Answer 16

118

Question 17

What is ignition temperature?

Answer 17

The minimum temperature required before combustion

Question 18

What is flame temperature?

Answer 18

The maximum temperature reach inside the flame

Question 19

Definition of flame Speed

Answer 19

Are the speed that a gas flame will burn as long as there is combustible air mixture

Question 20

Flammability is based on the air and gas mixtures. What’s the percentage?

Answer 20

20% oxygen 80 percent nitrogen