- 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: Thermal shock produced by cooling is more dengerous/deleterious than that produced by heating a surface, because of the reason thatA cooling produces tension on the surface.
B cooling produces compression on the surface.
C heating does not produces any thermal stress.
D heating produces compression on the surface.
ANS:A - cooling produces tension on the surface. Thermal shock produced by cooling is more dangerous/deleterious than that produced by heating a surface because cooling produces tension on the surface. When a surface is rapidly cooled, such as by quenching in water or air, the outer layers contract and cool faster than the interior, resulting in the development of tensile stresses on the surface. These tensile stresses can lead to cracking or fracture of the material, particularly if it is brittle or if the temperature gradient is severe. In contrast, when a surface is heated, it typically expands, and the outer layers experience compressive stresses. While heating can also induce thermal stresses, the magnitude of these stresses is generally lower compared to those generated during rapid cooling. Additionally, materials often have greater tolerance for compression than tension, making cooling-induced thermal shock more detrimental. |


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