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Engineering Materials in EE

Engineering Materials in EE
When will be the electron pair bonding occurs ?

 Share holes
None of these
 Share electrons
 Lack holes

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Engineering Materials in EE
Absolute permittivity of a dielectric medium is represented by

 εoεr.
 εr / εo.
None of these
 εo / εr.

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Engineering Materials in EE
All ions of an element have the same

 atomic number.
 number of protons.
 both option A. and C.
 number of electrons.

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Engineering Materials in EE
Why diamond is very hard ?

None of these
 Because of high melting point
 Because of covalent solid
 Because of large cohesive energy

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Engineering Materials in EE
When the atomic magnetic moments are randomly oriented in a solid its magnetic behavior is termed as

 poly crystalline.
 paramagnetic.
 semi-magnetic.
 anti-ferromagnetic.

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Engineering Materials in EE
The temperature beyond which substances lose their ferroelectric properties, is known as

 conversion temperature.
 curie temperature.
 critical temperature.
 inversion temperature.

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