GLASS LABORATORY

What is a common application for borosilicate glass due to its properties?

• Automotive windshields

• Laboratory glassware

• Decorative art installations

• Solar panels

Which type of glass is known for its application in building windows and vehicle windows due to its ability to control glare and heat absorption?

• Laminated Glass

• Tinted Glass

• Tempered Glass

• Frosted Glass

Which of the following materials is used in the smallest quantity in the glass-making process described?

• Boric acid, H₃BO₃

• Lead(II) oxide, PbO

• Zinc oxide, ZnO

• All are used in the same quantity

What should be done after the glass mixture has melted and a plain sample is desired?

• Let the mixture cool inside the crucible.

• Immediately pour the molten glass into the ceramic fiber square.

• Use the crucible tongs to pour the molten glass onto the wire gauze in small drops.

• Mix the molten glass again with the stirring rod.

How should the powders be handled after being placed into the crucible?

• Heat them immediately without mixing.

• Mix them thoroughly before heating.

• Add water to facilitate mixing.

• Compact them tightly in the crucible.