What aspect of a material is altered during material processing?

• Its location

• Its properties

• Its ownership

• Its price

Which component is often modified in material processing?

• Temperature

• Grain structure

• Color

• Volume

Which of the following is a key difference between hot rolling and cold rolling?

• The color of the metal

• The temperature at which the process is performed

• The type of metal used

• The speed of the rollers

At what temperature is hot working performed?

• Below the recrystallisation temperature

• Above the recrystallisation temperature

• At room temperature

• At freezing temperature

What is the recovery process like in cold working?

• Rapid recovery

• No significant recovery

• Complete recovery

• Partial recovery

What happens to cracks in cold working?

• Cracks are sealed

• Cracks propagate and new cracks form

• Cracks disappear

• Cracks remain unchanged

In the stretching process, how does the deformation of the sheet occur?

• Through axial strain

• Through radial strain

• Through torsional strain

• Through compressive strain

What happens to the atoms in the material during sintering?

• They evaporate

• They melt

• They diffuse across particle boundaries and fuse together

• They condense

What is the key difference between sintering and melting?

• Sintering involves liquefaction

• Sintering forms a solid without melting

• Melting uses pressure

• Melting forms a gas

Which of the following is a common application of sintering?

• Making paper

• Producing metal parts

• Growing plants

• Baking bread