- 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: The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.A 768
B 908
C 1400
D 1539
ANS:A - 768 The temperature at which the magnetic property of iron disappears, known as the "Curie point," is approximately 768°C. Explanation: The Curie point is the temperature at which a material undergoes a phase transition from ferromagnetic to paramagnetic. In the case of iron, this transition occurs at approximately 768°C (1414°F) or 1041 K. At temperatures below the Curie point, iron exhibits ferromagnetic properties, meaning it can be magnetized and retains its magnetization when the magnetic field is removed. However, as the temperature increases beyond the Curie point, the alignment of magnetic domains within the material becomes disordered, causing the material to lose its ferromagnetic properties and become paramagnetic. Additionally, at the Curie point, iron also undergoes changes in its electrical conductivity and specific heat capacity. These changes are associated with alterations in the arrangement of atoms and electrons within the material as it transitions from the ferromagnetic phase to the paramagnetic phase. Therefore, the Curie point of iron is approximately 768°C. |


For help Students Orientation
Mcqs Questions
One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.