Multiple choice

Which of the following is not a type of crude oil?

  1. Paraffin base

  2. Asphatic base

  3. Mixed base

  4. Sulphur base
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Crude oil is classified into three main types based on composition: paraffin base (high paraffin wax), naphthenic/asphaltic base (high asphalt content), and mixed base (intermediate). There is no "sulphur base" classification. While crude oils can be sour (high sulfur) or sweet (low sulfur), sulfur content is a property, not a classification base.

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