Fuel cells have various advantages compared to conventional power sources for internal combusti...........

Science Affairs Physics

Fuel cells have various advantages compared to conventional power sources for internal combustion engines or batteries; because

1. Fuel cells cause less noise pollution

2. Fuel cells eliminate greenhouse gases.

3. Fuel cells do not need conventional fuels.

Select the correct answer using the code given below.

3 only

1 and 2 only

1, 2 and 3

None of the above

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Explanation:

Statement 1 is correct.

Fuel cells have a higher efficiency than diesel or gas engines. Most fuel cells operate silently, compared to internal combustion engines.

Statement 2 is correct.

Fuel cells can eliminate pollution caused by burning fossil fuels; for hydrogen fuelled fuel cells, the only by-product at point of use is water. If the hydrogen comes from the electrolysis of water driven by renewable energy, then using fuel cells eliminates greenhouse gases over the whole cycle.

Statement 3 is correct.

Fuel cells do not need conventional fuels such as oil or gas and can therefore reduce economic dependence on oil producing countries, creating greater energy security for the user nation. Since hydrogen can be produced anywhere where there is water and a source of power, generation of fuel can be distributed and does not have to be grid-dependent.