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Consider the following statements.
- Hydrogen is an energy carrier, not a source of energy.
- Fuel cell-based vehicles most commonly combine hydrogen and oxygen to produce electricity to power the electric motor on board.
- Hydrogen is twice as efficient as burning petrol.
How many of the above statements are correct?
- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements. Hydrogen is an energy carrier, not ...
Statement Analysis:
Let's analyze each statement one by one to determine its correctness.
1. Hydrogen is an energy carrier, not a source of energy.
This statement is correct. Hydrogen is not a primary source of energy like fossil fuels or sunlight. It is rather an energy carrier that needs to be produced using other energy sources like natural gas, biomass, or electrolysis of water. It can then be used as a fuel or converted into electricity to power various applications.
2. Fuel cell-based vehicles most commonly combine hydrogen and oxygen to produce electricity to power the electric motor on board.
This statement is correct. Fuel cell-based vehicles use a process called electrolysis to combine hydrogen and oxygen in a fuel cell. The fuel cell then converts these gases into electricity through an electrochemical reaction. This electricity is used to power the electric motor, which propels the vehicle.
3. Hydrogen is twice as efficient as burning petrol.
This statement is incorrect. Hydrogen is not inherently more efficient than burning petrol. The efficiency of a fuel depends on various factors such as the energy content of the fuel, the conversion process, and the technology used. While hydrogen fuel cells can have higher efficiency compared to internal combustion engines, it is not accurate to generalize that hydrogen is twice as efficient as burning petrol.
Conclusion:
Out of the three statements, two are correct and one is incorrect. Therefore, the correct answer is option C, which states that all three statements are correct.
Let's analyze each statement one by one to determine its correctness.
1. Hydrogen is an energy carrier, not a source of energy.
This statement is correct. Hydrogen is not a primary source of energy like fossil fuels or sunlight. It is rather an energy carrier that needs to be produced using other energy sources like natural gas, biomass, or electrolysis of water. It can then be used as a fuel or converted into electricity to power various applications.
2. Fuel cell-based vehicles most commonly combine hydrogen and oxygen to produce electricity to power the electric motor on board.
This statement is correct. Fuel cell-based vehicles use a process called electrolysis to combine hydrogen and oxygen in a fuel cell. The fuel cell then converts these gases into electricity through an electrochemical reaction. This electricity is used to power the electric motor, which propels the vehicle.
3. Hydrogen is twice as efficient as burning petrol.
This statement is incorrect. Hydrogen is not inherently more efficient than burning petrol. The efficiency of a fuel depends on various factors such as the energy content of the fuel, the conversion process, and the technology used. While hydrogen fuel cells can have higher efficiency compared to internal combustion engines, it is not accurate to generalize that hydrogen is twice as efficient as burning petrol.
Conclusion:
Out of the three statements, two are correct and one is incorrect. Therefore, the correct answer is option C, which states that all three statements are correct.
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Community Answer
Consider the following statements. Hydrogen is an energy carrier, not ...
- Hydrogen is an energy carrier, not a source of energy. Hydrogen fuel must be transformed into electricity by a device called a fuel cell stack before it can be used to power a car or truck.
- A fuel cell converts chemical energy into electrical energy using oxidising agents through an oxidation-reduction reaction. Fuel cell-based vehicles most commonly combine hydrogen and oxygen to produce electricity to power the electric motor on board. Since fuel cell vehicles use electricity to run, they are considered electric vehicles (EVs).
- Hydrogen fuel cell cars have a near-zero carbon footprint. Hydrogen is about 2-3 times as efficient as burning petrol, because an electric chemical reaction is much more efficient than combustion.
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Consider the following statements. Hydrogen is an energy carrier, not a source of energy. Fuel cell-based vehicles most commonly combine hydrogen and oxygen to produce electricity to power the electric motor on board. Hydrogen is twice as efficient as burning petrol.How many of the above statements are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'C'. Can you explain this answer?
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