Dfs

Question 1

Chemical symbol of propane

Answer 1

C3h8
(Carbon & hydrogen)

Question 2

Chemical symbol of butane

Answer 2

C4h10
(Carbon & hydrogen)

Question 3

List 5 types of fuels

Answer 3

Natural gas
LPG
Oil
Solid fuels
Boimas

Question 4

What’s the Calorific value (the amount of energy stored) of natural gas ?

Answer 4

34-52 mJ/m3
C&G 37.8-43 MJ/m3
(Mega joules per meter cube)

Question 5

Which coal has the highest heat content?

Answer 5

Anthracite

Question 6

What registration body governs natural gas and LPG

Answer 6

Gas safe

Question 7

What registration body governs oil-fired heating appliances and fuel systems

Answer 7

OFTEC

Question 8

What registration body governs solid fuel and biomass domestic heating systems, fuels and appliances

Answer 8

HETAS

Question 9

What volume of oil must the bund wall be capable of holding

Answer 9

110% of the volume of the tank

Question 10

Recommended distance for a oil storage tank from a oil fired boiler

Answer 10

1.8m

Question 11

What grade fuel is kerosene

Answer 11

Grade c2 28 seconds

Question 12

What’s put in natural gas to give it it’s rotten egg smell

Answer 12

Ethyl-mercaptans

Hydrogen sulphide

Question 13

What’s dose 1 letter of LPG liquid equate to in gas

Answer 13

274 litres

Question 14

How far from a terminal from a oil filled appliance be from oil storage

Answer 14

1.8 m

Question 15

How far from the boundary of a property should an oil storage tank be?

Answer 15

760mm

Question 16

What’s the specific gravity of natural gas ?

Answer 16

0.6-0.8

Question 17

What’s the explosive zone for natural gas

Answer 17

5% to 15%

Question 18

What’s the specific gravity of propane

Answer 18

1.5

Question 19

What’s the specific gravity of butane

Answer 19

2.0

Question 20

Which British standard covers the installation and Maintenance of flues

Answer 20

BS 5440