Question

question 2 of 10
hydrogen - powered cars create less pollution than gasoline - powered cars when driven. what might be a challenge to using hydrogen as a fuel?
a. hydrogen is found naturally in the environment.
b. new fueling stations that can handle hydrogen would have to be built.
c. hydrogen is a toxic gas.
d. the exhaust from hydrogen and air combustions is nontoxic.

Explanation:

Hydrogen - powered cars are a new technology. Existing fueling stations are for gasoline. Building new stations for hydrogen is a significant infrastructure - related challenge. Option A is not a challenge, it's a fact about hydrogen's natural occurrence. Option C is incorrect as hydrogen is not a toxic gas. Option D is an advantage, not a challenge.

Answer:

B. New fueling stations that can handle hydrogen would have to be built.