- 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: __________ of hard alloy and tool steel is done to make it easily machinable.A Case carburising
B Tempering
C Normalising
D Annealing
ANS:B - Tempering Tempering is a heat treatment process applied to hardened metals, typically steel, to improve their mechanical properties. After a metal has been hardened through processes like quenching, it becomes very hard but also brittle. Tempering is done to reduce this brittleness while retaining the hardness achieved during hardening. During tempering, the hardened metal is heated to a temperature below its critical point (the point at which it becomes non-magnetic), and then held at that temperature for a specific period of time. The temperature and duration of tempering determine the mechanical properties of the final product. The main purpose of tempering is to:
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