Which of the following is present at the time of cracking of hydrocarbons?

By using what can the colloidal particles can be separated from particles of true solution?

Which of the following is not an example of a water-in-oil emulsion?

Which of the following can be used in place of tannin for the process of tanning?

Which of the following is an example of sorption?

Promoter decreases the activity of catalyst.

Which of the following statement about emulsions is true?

Colloids are classified into multi-molecular, macro-molecular and associated colloids.