01. THE SOLID STATE
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The Solid State

32253 The ratio of densities if same element undergoes \(FCC\) and \(HCP\) close packing

1 \(1\)
2 \(4/6\)
3 \(1.5\)
4 \(\sqrt 2\,/\sqrt 3\)
The Solid State

32281 In a tetragonal crystal

1 \(a = b = c,\,\alpha  = \beta  = {90^o}\, \ne \gamma \)
2 \(\,\alpha  = \beta  = \,\gamma  = {90^o},a = b \ne c\)
3 \(\,\alpha  = \beta  = \,\gamma  = {90^o}\,a \ne b \ne c\)
4 \(\,\alpha  = \beta  = {90^o},\gamma \, = \,{120^o},\,a = b \ne c\)
The Solid State

32317 Due to schottky's defect

1 The density of solid decreases
2 Density remains constant
3 The density of solid increases
4 Presence of \(F-\) centre
The Solid State

32002 Crystal structure of \(NaCl\) is

1 \(fcc\)
2 \(bcc\)
3 Both  \((a)\)  and \( (b)\)
4 None
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The Solid State

32253 The ratio of densities if same element undergoes \(FCC\) and \(HCP\) close packing

1 \(1\)
2 \(4/6\)
3 \(1.5\)
4 \(\sqrt 2\,/\sqrt 3\)
The Solid State

32281 In a tetragonal crystal

1 \(a = b = c,\,\alpha  = \beta  = {90^o}\, \ne \gamma \)
2 \(\,\alpha  = \beta  = \,\gamma  = {90^o},a = b \ne c\)
3 \(\,\alpha  = \beta  = \,\gamma  = {90^o}\,a \ne b \ne c\)
4 \(\,\alpha  = \beta  = {90^o},\gamma \, = \,{120^o},\,a = b \ne c\)
The Solid State

32317 Due to schottky's defect

1 The density of solid decreases
2 Density remains constant
3 The density of solid increases
4 Presence of \(F-\) centre
The Solid State

32002 Crystal structure of \(NaCl\) is

1 \(fcc\)
2 \(bcc\)
3 Both  \((a)\)  and \( (b)\)
4 None
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The Solid State

32253 The ratio of densities if same element undergoes \(FCC\) and \(HCP\) close packing

1 \(1\)
2 \(4/6\)
3 \(1.5\)
4 \(\sqrt 2\,/\sqrt 3\)
The Solid State

32281 In a tetragonal crystal

1 \(a = b = c,\,\alpha  = \beta  = {90^o}\, \ne \gamma \)
2 \(\,\alpha  = \beta  = \,\gamma  = {90^o},a = b \ne c\)
3 \(\,\alpha  = \beta  = \,\gamma  = {90^o}\,a \ne b \ne c\)
4 \(\,\alpha  = \beta  = {90^o},\gamma \, = \,{120^o},\,a = b \ne c\)
The Solid State

32317 Due to schottky's defect

1 The density of solid decreases
2 Density remains constant
3 The density of solid increases
4 Presence of \(F-\) centre
The Solid State

32002 Crystal structure of \(NaCl\) is

1 \(fcc\)
2 \(bcc\)
3 Both  \((a)\)  and \( (b)\)
4 None
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The Solid State

32253 The ratio of densities if same element undergoes \(FCC\) and \(HCP\) close packing

1 \(1\)
2 \(4/6\)
3 \(1.5\)
4 \(\sqrt 2\,/\sqrt 3\)
The Solid State

32281 In a tetragonal crystal

1 \(a = b = c,\,\alpha  = \beta  = {90^o}\, \ne \gamma \)
2 \(\,\alpha  = \beta  = \,\gamma  = {90^o},a = b \ne c\)
3 \(\,\alpha  = \beta  = \,\gamma  = {90^o}\,a \ne b \ne c\)
4 \(\,\alpha  = \beta  = {90^o},\gamma \, = \,{120^o},\,a = b \ne c\)
The Solid State

32317 Due to schottky's defect

1 The density of solid decreases
2 Density remains constant
3 The density of solid increases
4 Presence of \(F-\) centre
The Solid State

32002 Crystal structure of \(NaCl\) is

1 \(fcc\)
2 \(bcc\)
3 Both  \((a)\)  and \( (b)\)
4 None
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