- Chemical Engineering Basics - Section 1
- Chemical Engineering Basics - Section 2
- Chemical Engineering Basics - Section 3
- Chemical Engineering Basics - Section 4
- Chemical Engineering Basics - Section 5
- Chemical Engineering Basics - Section 6
- Chemical Engineering Basics - Section 7
- Chemical Engineering Basics - Section 8
- Chemical Engineering Basics - Section 9
- Chemical Engineering Basics - Section 10
- Chemical Engineering Basics - Section 11
- Chemical Engineering Basics - Section 12
- Chemical Engineering Basics - Section 13
- Chemical Engineering Basics - Section 14
- Chemical Engineering Basics - Section 15
- Chemical Engineering Basics - Section 16
- Chemical Engineering Basics - Section 17
- Chemical Engineering Basics - Section 18
- Chemical Engineering Basics - Section 19
- Chemical Engineering Basics - Section 20
- Chemical Engineering Basics - Section 21
- Chemical Engineering Basics - Section 22
- Chemical Engineering Basics - Section 23
- Chemical Engineering Basics - Section 24
- Chemical Engineering Basics - Section 25
- Chemical Engineering Basics - Section 26
- Chemical Engineering Basics - Section 27
- Chemical Engineering Basics - Section 28


Chemical Engineering Basics - Engineering
Q1: Work hardening of a materialA decreases its tensile strength.
B decreases its ductility.
C increases its ductility.
D does not affect its ductility.
ANS:B - decreases its ductility. Work hardening of a material decreases its ductility. Work hardening, also known as strain hardening or cold working, is a process in which a material becomes harder and stronger as a result of plastic deformation. When a material undergoes plastic deformation, dislocations in its crystal lattice structure move and multiply, creating internal stresses within the material. These internal stresses hinder the movement of dislocations, making it more difficult for them to continue deforming the material. As a result, the material becomes harder and stronger. However, while work hardening increases the strength and hardness of a material, it typically reduces its ductility. Ductility refers to the ability of a material to deform plastically before fracturing. As work hardening progresses, the material's ability to deform plastically decreases because the increasing number of dislocations and internal stresses limit further plastic deformation. This reduction in ductility can lead to brittleness and an increased tendency for the material to fracture under stress. Therefore, work hardening of a material generally decreases its ductility while increasing its strength and hardness. |


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