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NEET • CHEMISTRY • SOLID STATE
Solid state practice · Easy
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Schottky defect generally appears in
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Correct option: D
All of these
Option D (All of these) is correct because Schottky defects are commonly observed in ionic compounds with high coordination numbers, such as NaCl, KCl, and CsCl.
92
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Which arrangement of electrons leads ferromagnetism?
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Correct option: A
Option A () is correct because ferromagnetism arises from the parallel alignment of electron spins in the same direction.
93
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The yellow colour of and conducting nature produced in heating is due to:
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Correct option: D
All of the above
Option D (All of the above) is correct because the yellow color and conducting nature of heated ZnO are due to metal excess defects, interstitial cations, and trapped electrons.
94
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The limiting radius ratio for tetrahedral shape is
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Correct option: B
0.255 to 0.414
Option B (0.255 to 0.414) is correct because the limiting radius ratio for tetrahedral coordination is in the range of 0.225 to 0.414. The closest option is 0.255 to 0.414.
95
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Cation and anion combines in a crystal to form following type of compound
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Correct option: A
Ionic
Option D (Piezoelectricity) is correct because piezoelectricity is the phenomenon where certain crystals generate an electric signal when pressure is applied.
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