Question

What does a glass rod made up of ?

• A. Borosilicates
• B. Pyrex
• C. Polypropylene
• D. All of these

Answer 1

The correct option is D All of these

Of the many silica-based glasses that exist, ordinary glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide, sodium oxide from sodium carbonate, calcium oxide, also called lime, and several minor additives.

Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents.

Pyrex is a brand for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware.

Polypropylene is also used as a component used in production of gas.