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CBSE
Class 12 Chemistry
The Solid State
Quiz 2
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What is the effect of Frenkel defect on the density of ionic solids?
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The density of the crystal increases
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The density of the crystal decreases
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The density of the crystal remains unchanged
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There is no relationship between density of a crystal and defect present in it
Explanation
The density of the crystal remains unchanged
In a Schottky defect
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an ion moves to interstitial position between the lattice points
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electrons are trapped in a lattice site
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some lattice sites are vacant
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some extra cations are present in interstitial space
Explanation
some lattice sites are vacant
To get n-type of semiconductor, germanium should be doped with
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gallium
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arsenic
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aluminium
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boron
Explanation
arsenic
p-type semiconductors are formed When Si or Ge are doped with
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group 14 elements
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group 15 elements
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group 13 elements
Explanation
group 13 elements
Which of the following conditions favours the existence of a substance in the solid state?
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High temperature
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Low temperature
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High thermal energy
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Weak cohesive forces
Explanation
Low temperature
A unit cell of BaCl
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four Ba
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eight Ba² ions and four Cl
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four Ba² ions and six Cl
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None of the above
Explanation
four Ba
0 h : 0 m : 1 s
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