Mock test 2

Which of the following is a characteristic of coke?

• It burns clearly and without a flame.

• It produces a lot of smoke.

• It is a liquid fuel.

• It is used in cooking.

Which of the following is true about LPG?

• It is a solid fuel.

• It includes propane and butane.

• It is only used in vehicles.

• It is a type of coal.

What type of flame is a sign of incomplete combustion?

• Blue steady flame.

• Yellow loose floppy flame.

• Green flickering flame.

• Red stable flame.

Why is flue temperature important?

• It affects the color of the flame.

• It influences the movement of flue gases and condensation.

• It determines the size of the flue.

• It controls the speed of combustion.

Why should a coal bunker be well-ventilated?

• To increase the temperature.

• To prevent moisture buildup.

• To reduce the size of the bunker.

• To enhance the color of coal.

Under what circumstance is planning permission NOT required for installing a PV system on a dwelling in the UK?

• When it is installed on a commercial building.

• When it meets the criteria for 'permitted development.'

• When it is larger than 50 square meters.

• When it is installed underground.

Why is greywater not suitable for drinking?

• It is too hot.

• It can be contaminated with bacteria, viruses, skin particles, and hair.

• It is too expensive to treat.

• It is too salty.

What is a limitation of mCHP systems?

• They are very cheap to maintain.

• They require no fuel.

• High maintenance costs.

• They are only used in large factories.

What potential issue should be considered when positioning solar collectors to ensure optimal performance?

• High wind speeds

• Potential shading from structures or trees

• Proximity to water sources

• Soil quality

What is a benefit of using biomass as a fuel source?

• It is a non-renewable resource

• It is a carbon-neutral installation

• It produces high levels of pollution

• It requires no land use