Question

What is the role of aniline or cresol when added in a froth floatation process?

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> AIIMS 2013

• A. Depressant
• B. Wetting agent
• C. Stabilizer
• D. All of the above

Answer 1

The correct option is C Stabilizer

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water. Aniline or cresol are added to stabilize the froth and enhance the non-wettability of the mineral particles.