Which one of the following fuels causes minimum environmental pollution ?

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Q: 117 (IAS/1995)
Which one of the following fuels causes minimum environmental pollution ?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,429,34,9,11,429,14

keywords: 

{'fuels': [0, 1, 0, 1], 'minimum environmental pollution': [1, 0, 0, 0], 'diesel': [1, 0, 0, 1], 'coal': [0, 1, 2, 0], 'hydrogen': [0, 0, 1, 3], 'kerosene': [2, 2, 3, 2]}

The correct answer is Hydrogen (Option 3). Here`s why:

Option 1 - Diesel is responsible for emitting particulates, greenhouse gases, and other contaminants like sulfur and nitrogen compounds which contribute to air pollution.

Option 2 - Coal, when burned, releases substances like sulfur dioxide, nitrogen oxides, and mercury compounds, which are harmful to both the environment and the health of living beings.

Option 3 - Hydrogen is the cleanest fuel among these options because it produces only water vapor when it is burned. Thus, it doesn`t contribute to air pollution, making it environmentally friendly.

Option 4 - Kerosene, when burned, emits a significant amount of pollutants, including carbon-containing particles, which contribute to climate change and respiratory diseases.

So, the correct choice is indeed Hydrogen (Option 3).