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Ans A; adding some points Cu(I) is diamagnetic and Cu(II) is paramagnetic. Iron is Ferromagnetic as it can retain it's magnetic field even after removing the magnetic field. But only alpha Fe is Ferromagnetic below Curie temperature of 770°C , above this temp. Fe is paramagnetic. Mercury is superconRead more
Ans A; adding some points
Cu(I) is diamagnetic and Cu(II) is paramagnetic.
Iron is Ferromagnetic as it can retain it’s magnetic field even after removing the magnetic field. But only alpha Fe is Ferromagnetic below Curie temperature of 770°C , above this temp. Fe is paramagnetic.
Mercury is superconductor below 4K temperature.
Si acts as insulator at Ok temperature and semiconductor in certain temperature ranges however it is one of semiconductors stable at higher temperature than other like Ge.
See lessCorrect answer is option A. @Rohit.km described it best. Thank you. Some peripheral lines related to this topic: Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. In superconductors, resistance decreases gradually asRead more
Correct answer is option A. Rohit jha.km described it best. Thank you.
Some peripheral lines related to this topic:
- Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.
- In superconductors, resistance decreases gradually as its temperature is lowered even down to near absolute zero, and has a characteristic critical temperature below which the resistance drops abruptly to zero.
- A semiconductor material has an electrical conductivity value falling between that of a conductor , such as metallic copper, and an insulator, such as glass. Its resistance falls as its temperature rises.
- Diamagnetic materials are repelled by a magnetic field ; an applied magnetic field creates an induced magnetic field in them in the opposite direction, causing a repulsive force.
See lessA
A
See lessA is correct answer
A is correct answer
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