CHEMISTRY F4C8

The main component in alloy P is tin.
What is alloy P?

• Duralumin

• Brass

• Stainless steel

• Pewter

Digital communication is very important nowadays. Effective transmission of data, voices and images in a digital format requires a suitable material. What is the material?

• Silicon

• Copper

• Optical fibre

• Superconductor

A new product P in industry needs to function under the extremely low temperature and conducts electricity without resistance. What is product P?

• Ceramic

• Fibre glass

• Optical fibre

• Superconductor

Which is the correct composition for the alloy?

• Bronze: Copper & Zinc

• Brass: Copper & Carbon

• Steel: Iron & Zinc

• Pewter: Tin, Copper & Antimony

Which of the following are the properties of ceramic?

• Melts easily

• Hard but brittle

• Good heat conductor

• High resistance to chemicals

What is alloy Z?

• Bronze

• Brass

• Stainless steel

• Steel

Which of the following statements explains why bronze is harder than pure copper?

• The atomic size of copper is larger than tin

• Tin and copper form chemical bonds with each other

• Bronze contains atoms of different sizes and thus making layers of atoms more difficult to slide over another

• There is empty space in bronze

Which of the following glass has the properties?

• Fused silica glass

• Soda lime glass

• Borosilicate glass

• Lead crystal glass

What are the reasons for making an alloy?

• To make it harder

• To make it more resistant to corrosion

• To improve the appearance of the pure metal

• So that it becomes more environmental friendly

Which glass is correctly matched to its use?

• Fused silica glass: making telescope lenses

• Lead crystal glass: making laboratory glass

• Soda lime glass: making prism

• Borosilicate glass: making glass containers