One or more factors that today prevent the widespread use of hydrogen as a fuel is/are
A)the need to first separate hydrogen from its chemical compounds, such as water.
B)the carbon dioxide produced when it combines with oxygen.
C)the amount of energy liberated when it combines with oxygen.
D)the difficulty of storing and shipping it.
E)Both A and D

Question

Quizplus · Accepted Answer

The need to first separate hydrogen from its chemical compounds, such as water, and the difficulty of storing and shipping it are major factors that prevent the widespread use of hydrogen as a fuel. Both these factors are covered in option E. While carbon dioxide is produced when hydrogen combines with oxygen, it is not a major barrier to the widespread use of hydrogen as a fuel. The amount of energy liberated when hydrogen combines with oxygen is actually one of its advantages as a fuel.

One or More Factors That Today Prevent the Widespread Use