Explain kinetic and gravitational potential energy, rules for conservation of energy and relationship between these quantities as well as apply the knowledge gained for useful purposes.
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Q 1/20
Score 0
What is the role of the anode in a fuel cell?
30
To release electrons from hydrogen
To absorb electrons
To combine hydrogen and oxygen
To produce heat
Q 2/20
Score 0
What is the role of the cathode in a fuel cell?
30
To release electrons
To filter water
To store hydrogen
To react hydrogen with oxygen and electrons
20 questions
Q.
What is the role of the anode in a fuel cell?
1
30 sec
SC9.E.1
Q.
What is the role of the cathode in a fuel cell?
2
30 sec
Q.
Which of the following best describes hydrogen as an energy source?
3
30 sec
Q.
What method of hydrogen production is similar to plant photosynthesis?
4
30 sec
Q.
What is a problem associated with using hydrogen as a gas under pressure?
5
30 sec
Q.
Where do the electrons go after leaving the anode in a hydrogen fuel cell?
6
30 sec
Q.
What does the catalyst material in the electrodes of a fuel cell do?
7
30 sec
Q.
What is the main environmental concern related to the steam reforming method for producing hydrogen?
8
30 sec
Q.
What is the only emission from the tailpipe of a hydrogen powered car?
9
30 sec
Q.
What is a key advantage of hydrogen fuel cells over internal combustion engines?
10
30 sec
Q.
What are hydrides, in the context of hydrogen storage?
11
30 sec
Q.
What method uses electricity to split water into hydrogen and oxygen?
12
30 sec
Q.
The sources suggest that hydrogen production from electrolysis will be more sustainable if the electricity used:
13
30 sec
Q.
Why has hydrogen not been widely adopted previously, despite it being recognized as a potential fuel?
14
30 sec
Q.
According to the sources, how does the energy output of hydrogen fuel compare to the energy input needed to produce it?
15
30 sec
Q.
According to the sources, what makes the storage of hydrogen as a compressed gas problematic?
16
30 sec
Q.
Why is mimicking photosynthesis considered a better path for producing hydrogen?
17
30 sec
Q.
What does the source suggests about the current source of industrial hydrogen?
18
30 sec
Q.
What is one of the advantages that hydrogen fuel has over batteries, according to the sources?
19
30 sec
Q.
What is a potential future application for hydrogen, as described in the sources?
