Related Questions

The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is
A 770°C
B 910°C
C 1050°C
D Below recrystallization temperature
Paramagnetic alpha iron changes to gamma iron at
A 770°C
B 912°C
C 1440°C
D 1539°C
The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.
A 768
B 1127
C 1359
D 1480
Heating of ferromagnetic materials to a temperature above Curie temperature makes it
A Insulator for heat & electricity transmission
B Ferritic
C Behave like paramagnetic materials
D Superconductor
Who said, "The State exists because crime exists in society, otherwise there would be no need of a State"?
A Herbert Spencer
B J. S. Mill
C John Locke
D Tocqueville
The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the
A Critical point
B Curie temperature
C Inversion temperature
D Eutectic temperature
Alpha iron is stable __________ °C.
A Above 1403
B Upto 910
C Above 1800
D Between 910 & 1403
The crystal of alpha iron is
A Body centered cubic
B Face centered cubic
C Hexagonal close packed
D Cubic structure
The type of space lattice found in alpha-iron is
A Face centered cubic space lattice
B Body centered cubic space lattice
C Close packed hexagonal space lattice
D None of these
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection ($$\alpha $$) is
A $$\frac{\beta }{2}$$
B 30° + $$\frac{\beta }{2}$$
C 45° + $$\frac{\beta }{2}$$
D 60° + $$\frac{\beta }{2}$$

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