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The Solid State

Question
CBSEENCH12005573
Wired Faculty App

What other element may be added to silicon to make electrons available for the conduction of electric current?

Solution

When doping a semiconductor, such as the group IV element silicon (Si), with arsenic (As), a pentavalent n-type dopant from group V in the periodic table the dopant behaves as an electron donor.

Question
CBSEENCH12005574
Wired Faculty App

Why does Frenkel defect not change the density of AgCl crystal?

Solution

In the frenkel defect the ions are not removed from the crystal to maintain electrical neutrality. so there will be no change in the crystal structure. that is there is no decrease in the no of ions.all the ions are inside the crystal.they are only dislocated.

Question
CBSEENCH12005575
Wired Faculty App

What is the difference between ferromagnetic and ferrimagnetic substances?

Solution

In ferromagnetic materials, neighboring dipoles tend to line up in the same direction, whereas in ferrimagnetic materials, neighboring dipoles tend to line up in opposing directions.

Question
CBSEENCH12005576
Wired Faculty App

Which ‘point defect’ lowers the density of ionic crystals?

Solution

Schottky Defect lowers the density of ionic crystal.

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