Multiple choice

________ is a thick, black liquid with an unpleasant smell and is a mixture of about two hundred substances.

  1. Aviation fuel

  2. Lubricating oil

  3. Coal tar

  4. Kerosene

  5. CNG

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

Coal tar is a thick, black liquid with an unpleasant smell, and is a mixture of about two hundred substances.