NEW
Font size
WorksheetsA Level Metal Finishes
Total questions: 20
Worksheet time: 10mins
Which of the following is a method used to finish metals to enhance their appearance or prevent corrosion?
Cellulose paint
Sanding
Welding
Drilling
Which metal finishing process involves immersing the metal in a bath of molten zinc?
Galvanising
Anodising
Powder coating
Dip coating
Which of the following is a protective finish that involves applying a thin layer of metal onto the surface?
Electro-plating
Powder coating
Sealants
Preservatives
Which finishing technique involves applying a dry powder that is then cured under heat?
Powder coating
Electro-plating
Anodising
Galvanising
Which group of metals is known to rust, with one exception?
Non-ferrous metals
Ferrous metals
Precious metals
Alkali metals
What is the exception to the group of metals that rust?
Copper
Stainless steel
Aluminum
Gold
What color does the surface of a metal become when it rusts?
Blue-green
Red-brown
Yellow-orange
Black-gray
How do finishes help protect metals?
By making them waterproof
By providing a barrier against corrosion
By making them fireproof
By insulating them from electricity
What is one of the main purposes of cellulose and acrylic paints?
To provide insulation
To provide color and texture while preventing corrosion
To conduct electricity
To increase weight
Which of the following is NOT a commonly used metal for electroplating?
Silver
Gold
Iron
Zinc
In electroplating, what is the role of the electrolyte solution?
To dissolve the metal
To conduct electricity and facilitate ion transfer
To cool down the metal
To change the color of the metal
What type of current is applied during the electroplating process?
Alternating current
Direct current
Pulsating current
Static current
Which metal is used as the donor in the electroplating process shown in the diagram?
Silver
Copper
Gold
Tin
What is the first step in the polymer dip coating process?
The product is dipped into polymer powder.
The metal product is heated to approximately 230°.
Air is blown through the polymer powder.
The product is air cooled.
What happens to the polymer when heat is applied during the coating process?
It evaporates.
It solidifies.
It melts over the product.
It changes color.
What is the charge of the product to be coated in the powder coating process?
Positive
Neutral
Negative
None
What is the primary purpose of varnishing metal?
To change the color of the metal
To provide a clear finish and protect the metal
To make the metal heavier
To increase the metal's temperature
What must be done to the metal before applying varnish?
It must be painted
It must be polished to a shine and all grease removed
It must be heated
It must be cooled
What are sealants primarily used for?
To enhance the color of surfaces
To protect polished surfaces from decay and tarnishing
To increase the weight of metalwork
To change the texture of surfaces
Which metal is at the top of the electrochemical activity series?
Copper
Zinc
Nickel
Lead
