The primary challenge of hydrogen fuel cells is ________.
A) that hydrogen is in very limited supply
B) that they generate excessive pollution
C) designing them to store explosive gas in a safe way
D) that they are inefficient

Question

Quizplus · Accepted Answer

The primary challenge of hydrogen fuel cells is designing them to store explosive gas in a safe way. Hydrogen is highly explosive and flammable, so engineering the storage and transfer systems is crucial for the safe operation of fuel cell vehicles. The other options are not accurate as hydrogen is not in limited supply, fuel cells generate only water as byproduct and are not polluting, and fuel cells are actually very efficient compared to traditional combustion engines.

The Primary Challenge of Hydrogen Fuel Cells Is ________