Metals: Properties, Applications, and Heat Treatment

Question 1

Which non-ferrous metal is known for its exceptional electrical conductivity?

Accepted Answer

Copper

Answer

Aluminium

Answer

Titanium

Answer

Zinc

Question 2

Which metal is renowned for its exceptional strength-to-weight ratio?

Accepted Answer

Titanium

Answer

Aluminium

Answer

Copper

Answer

Iron

Question 3

What is the main purpose of heat treating metal?

Accepted Answer

To improve mechanical properties such as strength and hardness

Answer

To reduce corrosion

Answer

To increase ductility

Answer

To enhance electrical conductivity

Question 4

What is the process of annealing used for?

Accepted Answer

To soften the metal

Answer

To harden the metal

Answer

To increase corrosion resistance

Answer

To improve electrical conductivity

Question 5

Which of the following metals is classified as a non-ferrous metal?

Accepted Answer

Gold

Answer

Iron

Answer

Steel

Answer

Nickel

Question 6

How does carbon content affect the strength of steel?

Accepted Answer

Increased carbon content generally increases strength

Answer

Increased carbon content generally decreases strength

Answer

Carbon content has no effect on strength

Answer

The relationship between carbon content and strength depends on alloying elements

Question 7

What is the primary alloying element added to stainless steel?

Accepted Answer

Chromium

Answer

Nickel

Answer

Molybdenum

Answer

Manganese

Question 8

What is the purpose of tempering in the heat treatment of steel?

Accepted Answer

To decrease hardness and increase toughness

Answer

To increase hardness

Answer

To improve toughness

Answer

To enhance corrosion resistance

Question 9

Which of the following heat treatments is used to enhance the hardness and wear resistance of steel?

Accepted Answer

Hardening and tempering

Answer

Annealing

Answer

Normalizing

Answer

Aging

Question 10

Which of the following alloying elements is commonly added to steel to improve its corrosion resistance?

Accepted Answer

Chromium

Answer

Carbon

Answer

Copper

Answer

Nickel

Question 11

Which of the following non-ferrous metals is renowned for its excellent electrical conductivity?

Accepted Answer

Copper

Answer

Aluminum

Answer

Iron

Answer

Zinc

Question 12

Which of the following metals is lightweight, corrosion-resistant, and commonly used in aerospace applications?

Accepted Answer

Titanium

Answer

Brass

Answer

Bronze

Answer

Stainless steel

Question 13

Which of the following mechanical properties measures a metal's resistance to deformation under tensile forces?

Accepted Answer

Tensile strength

Answer

Yield strength

Answer

Shear strength

Answer

Modulus of elasticity

Question 14

Which of the following non-destructive testing methods is used to identify surface cracks and flaws?

Accepted Answer

Dye penetrant testing

Answer

Ultrasonic testing

Answer

Radiographic testing

Answer

Magnetic particle testing

Question 15

Which of the following failure modes involves the gradual growth and propagation of cracks under repeated loading?

Accepted Answer

Fatigue failure

Answer

Ductile failure

Answer

Brittle failure

Answer

Creep failure

Question 16

Which of the following metals is known for its high melting point and is suitable for high-temperature applications?

Accepted Answer

Tungsten

Answer

Aluminum

Answer

Copper

Answer

Zinc

Question 17

What is the main criterion used to categorize metals?

Accepted Answer

Chemical composition

Answer

Mechanical strength

Answer

Visual characteristics

Question 18

Which property is NOT characteristic of metals?

Accepted Answer

Transparency

Answer

Malleability

Answer

Electrical conductivity

Answer

Ductility

Question 19

Which type of metal contains iron as its primary component?

Accepted Answer

Ferrous metal

Answer

Copper

Answer

Aluminum

Answer

Titanium

Question 20

Which alloy is commonly used in aerospace applications?

Accepted Answer

Titanium alloy

Answer

Copper alloy

Answer

Aluminum alloy

Answer

Steel alloy

Question 21

Which metal is not commonly utilized in construction applications?

Accepted Answer

Titanium

Answer

Aluminum

Answer

Steel