Question

Glass bottles used for storage of medicines are made up of ________ glass.

• A. optical
• B. borosilicate
• C. lead
• D. frosted

Answer 1

The correct option is B borosilicate

Glasses are catergorised into different types based on the components used for manufacturing them. Due to the presence of different raw materials, different types of glass exhibit different properties and thus can be used in different applications.
$$\begin{array}{ccc}\text{Type of Glass}& \text{Properties}& \text{Applications (in manufacturing)}\\ \text{Silica glass}& \text{Unreactive towards}& \\ & \text{acids \& alkalies}& \text{Laboratory glass wares}\\ \text{Borosilicate}& & \\ \text{glass}& \text{Durable and resistant}& \text{Pharmaceutical industry}\\ & \text{to chemical change}& \text{to store medicines}\\ \text{Lead glass}& \text{Very clear and transparent}& \text{Light bulbs and tubes}\\ \text{Optical glass}& \text{Soft \& transparent}& \text{Spectacles, lenses}\\ & & \text{\&}\\ & & \text{microscopic lenses}\end{array}$$