- 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: __________ wire is never used for making the heating element.A Nichrome
B Kanthal
C Invar
D None of these
ANS:C - Invar Invar is a nickel-iron alloy known for its low coefficient of thermal expansion (CTE), which means it expands and contracts very little with changes in temperature. This unique property makes Invar valuable in applications where dimensional stability over a wide temperature range is critical. Invar typically contains around 36% nickel and 64% iron, although variations in composition exist depending on the specific application requirements. The name "Invar" is derived from "invariable," reflecting its stable dimensions across a range of temperatures. Key characteristics and properties of Invar include:
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