Question 28 – Fuels - Edexcel GCSE Chemistry Questions

Ferry

Sulfur dioxide (

g/km\text{g/km}

)

Nitrogen oxides (

g/km\text{g/km}

)

Carbon dioxide (

g/km\text{g/km}

)

Particulates (

g/km\text{g/km}

)

Ferry P (Older diesel, untreated)

1.40

12.50

3400

0.42

Ferry Q (Modern diesel, SCR & scrubber)

0.15

2.10

3400

0.05

Ferry R (Modern LNG)

0.00

3.80

2600

0.01

Fuels Questions

Practise Edexcel GCSE Chemistry Fuels with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Passenger ferries are used to transport commuters across a busy city harbor.

The exhaust emissions from three different commuter ferries with similar passenger capacities were monitored:

Ferry P: An older diesel ferry running on marine gas oil (MGO) with no exhaust treatment.
Ferry Q: A modern diesel ferry running on marine gas oil (MGO) fitted with selective catalytic reduction (SCR) and a wet scrubber.
Ferry R: A modern ferry running on Liquefied Natural Gas (LNG).

Using the data in the table below and your own chemical knowledge, discuss and compare the environmental and health impacts of the emissions from these three ferries.

Ferry	Sulfur dioxide ( $g/km\text{g/km}$ )	Nitrogen oxides ( $g/km\text{g/km}$ )	Carbon dioxide ( $g/km\text{g/km}$ )	Particulates ( $g/km\text{g/km}$ )
Ferry P (Older diesel, untreated)	1.40	12.50	3400	0.42
Ferry Q (Modern diesel, SCR & scrubber)	0.15	2.10	3400	0.05
Ferry R (Modern LNG)	0.00	3.80	2600	0.01