30. Mid Course Exam mock 1

Mid Course Exam mock 1
This is a mock test to refresh your memory and to help familiarise yourself with your gas book.
Use the book to find the answers.
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MockFurther Education (Key Stage 5)

This lesson contains 21 slides, with interactive quizzes and text slide.

Items in this lesson

Mid Course Exam mock 1
This is a mock test to refresh your memory and to help familiarise yourself with your gas book.
Use the book to find the answers.

Slide 1 - Slide

What is the explosive range for Natural Gas, when expressed as a percentage of gas in air: -
A
1.6% to 7.75%
B
2% to 10%
C
4% to 40%
D
5% to 15%

Slide 2 - Quiz

The specific gravity of natural gas is: -
A
0.6
B
0.8
C
1.5
D
2

Slide 3 - Quiz

The industry unsafe procedure defines an ‘Immediately Dangerous’ situation as: -
A
A danger to life or property.
B
Not complying with current Building Regulations
C
Not complying with current British Standards
D
May be a danger to life or property sometime in the future

Slide 4 - Quiz

Copper compression fittings can only be used on a gas supply in which one of the following situations:
A
Only on vertical runs
B
Only on horizontal runs.
C
Only where they are readily accessible
D
Only where they are under ventilated floors

Slide 5 - Quiz

An approved flexible hose is only permitted for connecting which, of the following appliances to the gas supply: -
A
Radiant gas fire.
B
Single point water heaters
C
Free standing cooker
D
Balanced flue space heater.

Slide 6 - Quiz

The space between sleeves and gas supplies are required to be sealed with which of the following mastic types: -
A
Fire resistant and solid setting
B
Flexible and fire resistant
C
Flexible and flammable.
D
Flammable and solid setting.

Slide 7 - Quiz

Notches cut into joists to run 22mm pipe should not exceed what depth -
A
1/3 of the depth of the joist
B
1/4 of the depth of the joist
C
1/8 of the depth of the joist.
D
1/10 of the depth of the joist.

Slide 8 - Quiz

The recommended clipping distance, for horizontal runs of 15mm copper tube, is: -
A
1 metre
B
1.5 metres.
C
2 metres.
D
2.5 metres.

Slide 9 - Quiz

Where a tee is to be installed in to a copper supply adjacent to a meter, which one of the following actions, best describes, what should be carried out: -
A
The installation should be turned off.
B
The installation should be turned off and a temporary continuity bond connected.
C
The installation should be turned off, a temporary continuity bond connected and the meter should then be disconnected and placed to one side
D
The installation should be turned off, a temporary continuity bond connected; the meter should then be disconnected, capped and placed to one side.

Slide 10 - Quiz

Gas supplies that are run through a cavity wall: -
A
Are only permitted if they take the shortest practical route from one side to the other.
B
Are only permitted if they take the shortest practical route from one side to the other and are run through a sealed sleeve.
C
Are only permitted if the cavity is ventilated.
D
Are only permitted if the cavity is filled with a fire retardant insulating material.

Slide 11 - Quiz

The two main products of complete combustion of natural gas are: -
A
Carbon Monoxide and water vapour
B
Methane and Carbon Dioxide.
C
Carbon Dioxide and water vapour
D
Methane and Carbon Monoxide

Slide 12 - Quiz

From the following list what would be the main toxic product of incomplete combustion of Natural Gas: -
A
Hydrogen.
B
Carbon Monoxide.
C
Carbon Dioxide.
D
Nitrogen.

Slide 13 - Quiz

The complete combustion of 1 m³ Natural Gas requires approximately:
A
4 m³ of air
B
10m³ of air
C
15m³ of air
D
20m³ of air

Slide 14 - Quiz

Ventilation for open flued appliances can not be taken from a room which contains: -
A
An extract fan.
B
An oil or solid fuel appliance
C
A central heating boiler.
D
A bath or shower.

Slide 15 - Quiz

The term adventitious air means: -
A
Air removed by an extract fan.
B
Air entering a room through cracks around doors and openable windows
C
Hot air rising from the appliance casing.
D
Cool air entering the appliance.

Slide 16 - Quiz

The minimum distance ‘X’ between two ridge terminals should be: -
A
300mm
B
600mm
C
1000mm
D
1500mm

Slide 17 - Quiz

Where two open flue appliances are connected to a single flue, current standards states that the appliances must incorporate a draught diverter and an oxygen depletion device. What other device does current standards also require the appliances to be manufactured with:
A
Thermostat
B
Fan flue.
C
Overheat trip.
D
Flame supervision device.

Slide 18 - Quiz

The lower opening in the ventilation duct in a balanced compartment should be sited: -
A
100mm above floor level.
B
200mm above floor level
C
300mm above floor level.
D
At high level.

Slide 19 - Quiz

The minimum distance, for a natural draught balanced flued terminal, installed vertically above another natural draught balanced flue terminal on the same wall is: -
A
300mm.
B
600mm.
C
1200mm.
D
1500mm.

Slide 20 - Quiz

A flexible flue liner should not be used: -
A
With a back boiler.
B
Outside of a chimney.
C
When a chimney’s has deteriorated.
D
To prevent damp patches appearing on internal brickwork

Slide 21 - Quiz