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Question 1:

What is the primary advantage of hydrogen fuel cells as an alternative energy source?

A) Zero greenhouse gas emissions
B) High energy density
C) Abundant availability of hydrogen
D) Low production cost

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Explanation: The correct answer is A) Zero greenhouse gas emissions. One of the primary advantages of hydrogen fuel cells is that they produce zero greenhouse gas emissions during operation. When hydrogen reacts with oxygen in the fuel cell, the only byproduct is water vapor, making it a clean and environmentally friendly energy source.

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Question 2:

What is the main challenge in the widespread adoption of hydrogen fuel cells?

A) Limited availability of hydrogen
B) High cost of fuel cell production
C) Lack of suitable infrastructure
D) Safety concerns

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Explanation: The correct answer is C) Lack of suitable infrastructure. One of the main challenges in the widespread adoption of hydrogen fuel cells is the lack of a comprehensive infrastructure to produce, store, and distribute hydrogen. The development of hydrogen refueling stations, storage systems, and transportation networks is essential for the efficient and practical use of hydrogen as an energy source.

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Question 3:

Which of the following is a common application of hydrogen fuel cells?

A) Electricity generation in power plants
B) Transportation, such as cars and buses
C) Heating and cooling systems
D) Battery storage for renewable energy

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Explanation: The correct answer is B) Transportation, such as cars and buses. One common application of hydrogen fuel cells is in transportation, where fuel cells power electric vehicles (e.g., cars, buses) by converting hydrogen and oxygen into electricity. Hydrogen fuel cell vehicles offer zero-emission transportation with longer ranges compared to purely battery-powered electric vehicles.

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Question 4:

What is the primary source of hydrogen used in fuel cells?

A) Natural gas
B) Water
C) Fossil fuels
D) Biomass

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Explanation: The correct answer is B) Water. The primary source of hydrogen used in fuel cells is water. Through a process called electrolysis, water molecules can be split into hydrogen and oxygen using an electric current. This hydrogen can then be used in fuel cells to generate electricity.

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Question 5:

What is one potential limitation of hydrogen fuel cells?

A) Low energy conversion efficiency
B) High fuel cell maintenance requirements
C) Limited hydrogen storage capacity
D) Incompatibility with existing infrastructure

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Explanation: The correct answer is C) Limited hydrogen storage capacity. One potential limitation of hydrogen fuel cells is the limited storage capacity of hydrogen. Hydrogen has a low volumetric energy density, requiring large storage tanks or advanced storage technologies for practical use. Overcoming this limitation and developing efficient and safe hydrogen storage methods is an active area of research.