Multiple choice

Which of the following is/are not used in the absorption process for purification of crude oil?

  1. Silica

  2. Bleaching clay

  3. Both (1) and (2)

  4. Fe2O3

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

Both silica gel and bleaching clay are adsorbents used to remove impurities during purification. Ferric oxide (Fe2O3) is not used in absorption processes for crude oil.