Which one of the following fuels is the most sustainable? A - VCE - SSCE Chemistry - Question 2 - 2012 - Paper 1

To determine which fuel is the most sustainable among the options provided, we need to evaluate each option based on its environmental impact, renewability, and energy output.

1. Biodiesel (A): Made from renewable resources such as vegetable oils or animal fats, biodiesel is a more sustainable option because it reduces greenhouse gas emissions and is biodegradable. It can help decrease reliance on fossil fuels.

2. Uranium (B): While nuclear energy from uranium does produce low emissions during operation, the mining, waste management, and potential for accidents present significant sustainability concerns.

3. Brown Coal (C): Brown coal, or lignite, is the least sustainable option. It is the most carbon-intensive fossil fuel, and its use contributes significantly to climate change and air pollution.

4. Natural Gas (D): Although it burns cleaner than other fossil fuels, natural gas is still a non-renewable resource and contributes to greenhouse gas emissions during extraction and combustion.

Based on this assessment, biodiesel (A) is the most sustainable fuel among the listed options.