Metals: Properties and Applications in Design and Technology

Question 1

Which property is NOT characteristic of mild steel?

Accepted Answer

Hardness

Answer

Ductility

Answer

Malleability

Answer

Toughness

Question 2

Which non-ferrous metal is predominantly used in electrical wiring?

Accepted Answer

Copper

Answer

Aluminium

Answer

Iron

Answer

Zinc

Question 3

Which type of joint is primarily used for permanent connections in metal fabrication?

Accepted Answer

Welded joint

Answer

Bolted joint

Answer

Riveted joint

Answer

Brazed joint

Question 4

What is the primary advantage of using stainless steel in environments demanding corrosion resistance?

Accepted Answer

Corrosion resistance

Answer

High tensile strength

Answer

Lightweight

Answer

Low cost

Question 5

What is the process used to reduce the thickness of metal sheets?

Accepted Answer

Rolling

Answer

Casting

Answer

Extrusion

Answer

Forging

Question 6

Which of the following is NOT a characteristic of metals?

Accepted Answer

Low density

Answer

High electrical conductivity

Answer

High thermal conductivity

Answer

High strength

Question 7

Which type of steel is specifically designed for high strength and wear resistance?

Accepted Answer

Tool steel

Answer

Mild steel

Answer

Carbon steel

Answer

Stainless steel

Question 8

What is the primary alloying element that imparts corrosion resistance to stainless steel?

Accepted Answer

Chromium

Answer

Nickel

Answer

Manganese

Answer

Carbon

Question 9

In the automotive industry, aluminum is primarily used for which component?

Accepted Answer

Body panels

Answer

Engine blocks

Answer

Brake systems

Answer

Exhaust systems

Question 10

Which of the following metals is known for its exceptional corrosion resistance?

Accepted Answer

Aluminum

Answer

Iron

Answer

Copper

Answer

Zinc

Question 11

What is the primary purpose of anodizing aluminum?

Accepted Answer

To improve its corrosion resistance

Answer

To enhance its strength

Answer

To increase its conductivity

Answer

To change its appearance

Question 12

What is the term for the heat treatment process that alters the properties of metal by heating and cooling it in a controlled manner?

Accepted Answer

Annealing

Answer

Quenching

Answer

Tempering

Answer

Forging

Question 13

Which of the following is a defining characteristic of ferrous metals?

Accepted Answer

Magnetic and contain iron

Answer

Lightweight

Answer

Resistant to corrosion

Question 14

Aluminum is an example of a:

Accepted Answer

Non-ferrous metal

Answer

Composite

Answer

Alloy

Answer

Ferrous metal

Question 15

What is the primary alloying element that determines the properties of steel?

Accepted Answer

Carbon

Answer

Copper

Answer

Aluminum

Answer

Zinc

Question 16

Which of the following is a common application of copper due to its electrical properties?

Accepted Answer

Electrical wiring

Answer

Cutting tools

Answer

Heat exchangers

Answer

Structural components

Question 17

What is the process of applying heat to metals to alter their properties called?

Accepted Answer

Heat treatment

Answer

Forging

Answer

Quenching

Answer

Tempering

Question 18

Which factor plays a significant role in determining the strength of a metal material?

Accepted Answer

Grain size

Answer

Melting point

Answer

Color

Answer

Density

Question 19

When soldering, what is the primary function of a flux?

Accepted Answer

To remove oxides and impurities

Answer

To increase the melting point of the solder

Answer

To lubricate the soldering iron

Question 20

Galvanic corrosion is a type of corrosion that occurs:

Accepted Answer

When two dissimilar metals are in contact in an electrolyte

Answer

Caused by exposure to corrosive chemicals

Answer

Due to mechanical wear and tear

Answer

As a result of high temperatures

Question 21

In construction, aluminum is valued primarily for its:

Accepted Answer

Combination of lightweight and strength

Answer

Fire resistance

Answer

Ease of welding

Answer

High corrosion resistance

Question 22

Which of the following is a method commonly used to join metal pieces together permanently?

Accepted Answer

Welding

Answer

Casting

Answer

Machining

Answer

Forging