Multiple choice

Which of the following is used for removing air bubbles from glass during its manufacture?

  1. Feldspar

  2. Arsenic Oxide

  3. Potassium Carbonate

  4. Soda Ash

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

Arsenic oxide is used as a refining agent in glass manufacture to remove air bubbles and improve clarity. It helps eliminate trapped gases during the melting process. Feldspar, potassium carbonate, and soda ash are raw materials, not refining agents.