Multiple choice

Petroleum is a complex mixture of hydrocarbons. Which of the following substances constitute hydrocarbons?

a. Carbon b. Carbon monoxide c. Hydrogen d. Nitrogen

  1. Only a and b

  2. Only b and c

  3. Only b and d

  4. Only a and c

  5. Only a and d

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Carbon and hydrogen make hydrocarbons.