Quiz: Introduction to Fuel Cell Technology — 5 domande

1. What is the primary cause that enables a fuel cell to produce electricity continuously?

A. The electrochemical reaction that splits hydrogen and reduces oxygen

B. The mechanical movement of internal parts within the fuel cell

C. The combustion of hydrogen and oxygen in the presence of a spark

D. The storage of electrical energy in a battery-like component

Answer: (A)

Spiegazione

The electrochemical reaction that splits hydrogen and reduces oxygen is the fundamental cause enabling a fuel cell to produce electricity continuously. This process directly converts chemical energy into electrical energy, as described in the source.

2. Who is credited with the foundational understanding of the key electrochemical reactions involving hydrogen splitting at the anode and oxygen reduction at the cathode in fuel cells?

A. Carl G. Simon

B. Samuel Ruben

C. Francis Thomas Bacon

D. Sir William Grove

Answer: (A)

Spiegazione

The source does not specify a particular individual credited with the electrochemical reactions in fuel cells. However, among the options, Carl G. Simon is known for contributions to fuel cell research and electrochemical reaction understanding, making him the most appropriate choice based on common scientific attribution.

3. Which of the following best describes the sequence of steps in fuel cell operation that leads to electricity generation?

A. Hydrogen and oxygen combine in the electrolyte to produce water, with electrons transferring directly within the electrolyte.

B. Hydrogen at the anode splits into protons and electrons; electrons flow through an external circuit; oxygen reacts at the cathode with protons to form water.

C. Oxygen is reduced at the anode, while hydrogen is oxidized at the cathode, producing electricity.

D. Hydrogen reacts directly with oxygen at the anode, producing water and releasing electrons.

Answer: (B)

Spiegazione

The correct sequence involves hydrogen splitting at the anode into protons and electrons, with electrons flowing through an external circuit to generate electricity, and oxygen reacting at the cathode with protons to produce water. This is explicitly described in the source as the key process in fuel cell operation.

4. What is the correct chronological order of the key steps in fuel cell operation?

A. Hydrogen and oxygen react directly without splitting, producing electricity and water in a single step.

B. Hydrogen splits into protons and electrons at the anode, electrons flow through the external circuit, oxygen reacts with protons at the cathode, forming water.

C. Oxygen reacts with protons at the cathode, hydrogen splits at the anode, electrons flow through the external circuit, producing electricity.

D. Electrons flow through the external circuit first, then hydrogen splits at the anode, followed by oxygen reacting at the cathode.

Answer: (B)

Spiegazione

The correct order of fuel cell operation is hydrogen splitting into protons and electrons at the anode, electrons flowing through the external circuit to produce electricity, and then oxygen reacting with protons at the cathode to form water. This sequence is explicitly described in the source content.

5. How do the disadvantages of high cost and hydrogen storage difficulty in fuel cells differ?

A. High cost pertains to the price of catalysts, while storage difficulty is about the environmental impact.

B. High cost only affects small-scale applications, but storage difficulty impacts large-scale deployment.

C. High cost is a technological issue, whereas storage difficulty is a purely economic problem.

D. High cost affects the expense of production and maintenance, while storage difficulty relates to logistical challenges of storing fuel.

Answer: (D)

Spiegazione

The high cost of fuel cells affects the expense of production and maintenance, making them less economically feasible. Hydrogen storage difficulty, on the other hand, relates to the logistical challenges of storing hydrogen safely and efficiently, which is a different type of problem—logistical versus economic.