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 primary function of a fuel cell?
30
To split water into hydrogen and oxygen
To generate electricity from a fuel and oxygen5...
To store hydrogen
To burn hydrogen for heat
Q 2/20
Score 0
What are the main reactants in a hydrogen fuel cell?
30
Methane and oxygen
Hydrogen and carbon dioxide
Hydrogen and oxygen5...
Water and electricity
20 questions
Q.
What is the primary function of a fuel cell?
1
30 sec
SC9.E.1
Q.
What are the main reactants in a hydrogen fuel cell?
2
30 sec
Q.
What is the primary waste product of a hydrogen fuel cell?
3
30 sec
Q.
Which of the following is a method for producing hydrogen?
4
30 sec
Q.
What is a major challenge in using hydrogen as a fuel for vehicles?
5
30 sec
Q.
In a fuel cell, where do electrons flow after being released by hydrogen?
6
30 sec
Q.
What is the role of a catalyst such as platinum or nickel in a fuel cell?
7
30 sec
Q.
Why is steam reforming of methane considered problematic despite being a method for hydrogen production?
8
30 sec
Q.
If a vehicle uses a hydrogen fuel cell, what is the primary emission from its tailpipe?
9
30 sec
Q.
What is a key advantage of fuel cells over internal combustion engines in terms of energy conversion?
10
30 sec
Q.
According to the sources, what is a promising solution for storing hydrogen for use in vehicles?
11
30 sec
Q.
What is one key method for producing hydrogen by splitting water molecules?
12
30 sec
Q.
The sources suggest that hydrogen production by electrolysis is more environmentally friendly if:
13
30 sec
Q.
Based on the sources, what is a main reason that hydrogen has not previously taken off as a widely used fuel?
14
30 sec
Q.
According to the sources, what is the relationship between the energy put into hydrogen production and the energy obtained from it?
15
30 sec
Q.
According to the sources, what is a major challenge for storing and transporting hydrogen?
16
30 sec
Q.
According to the sources, why is mimicking photosynthesis considered a hopeful pathway to produce hydrogen?
17
30 sec
Q.
What does the source suggest about the current industrial production of hydrogen?
18
30 sec
Q.
What is a key benefit of using hydrogen over batteries for vehicles based on the source?
19
30 sec
Q.
What does the source suggests about the future of hydrogen as a fuel?
