Multiple choice

Which of the following substances is dark brown and viscous crude oil with characteristic foul smell?

  1. Lubricating oil

  2. Petrol

  3. Diesel

  4. Petroleum

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

Lubricating oil, petrol and diesel are the products, which are obtained by the processing of petroleum. Petroleum is the crude oil obtained by decomposition of organic matter and has foul smell.