Glass

The picture shows a louvre window with glass panes. What is the material used in making the window glass?

• Fibreglass

• Soda lime glass

• Lead glass

• Borosilicate glass

Tags

NGSS.HS-PS2-6

The diagram shows a few test tubes used in laboratory. What is the chemical added to make the glass heat resistant?

• Calcium carbonate

• Sodium carbonate

• Lead(II) oxide

• Boron oxide

Substance X is added to glass to make it sensitive to light. What is X?

• Silicon dioxide and sodium carbonate

• Lead oxide and silicon dioxide

• Boron oxide and lead(II) oxide

• Silver chloride and copper(I) chloride

This type of glass contains silver bromide and becomes darker when exposed to light. What is the name of this type of glass?

• Lead glass

• Borosilicate glass

• Soda lime glass

• Photochromic glass

Lead glass is suitable for making chandeliers. What is a property of this type of glass?

• High refractive index

• High melting point

• Cheap and easily available

• Does not break easily

Silicon dioxide is a major component of glass. What is the type of glass formed when 24 % of lead(II) oxide is heated with silicon dioxide?

• Fused glass

• Lead crystal glass

• Borosilicate glass

• Soda lime glass

A transparent solid is formed when molten sand at high temperature is cooled quickly.

What is this solid?

• Ceramic

• Fused glass

• Soda lime glass

• Borosilicate glass

Material Y has the following properties:

- Resistance towards chemical substances

- Low coefficient of thermal expansion

• Bronze

• Polystyrene

• Borosilicate glass

• Conducting glass

Tags

NGSS.HS-PS2-6

Which of the following glass has a low softening point and can be easily moulded into different shapes?

• Fused quartz glass

• Soda lime glass

• Borosilicate glass

• Photochromic glass

Lead glass is very suitable for making fine glassware and art objects because this type of glass

• has a high refractive index

• has a high softening point

• is most transparent to ultraviolet and infrared rays

• is a good heat insulator

Tags

NGSS.HS-PS4-3