1 The ionic crystal of \(AgBr\) has Schottky defect
2 The unit cell having crystal parameters, \(a = b \ne c,\,\,\)\(\alpha = \beta = {90^o},\,\,\gamma = {120^o}\) is hexagonal
3 In ionic compounds having Frenkel defect the ratio \(\frac{{{\gamma _ + }}}{{{\gamma _ - }}}\) is high
4 The coordination number of \(N{a^ + }\)ion in \(NaCl\) is \(4\)
Explanation:
(b) A crystal system is hexagonal if its unit cell having \(a = b \ne c\) axial ratio and \(\alpha = \beta = 90^o ,\) \(\gamma = 120^o \) axial angles.
The Solid State
31899
Which of the following is correctCrystal system Axial distance Axial angles example
1 Cubic
\(a \neq b = c\)
\(\alpha= \beta \neq \gamma = 90^\circ\)
\(Cu, KCl\)
2 Monoclinic
\(a\neq b = c\)
\(\alpha=\beta=\gamma = 90^\circ\)
\(PbCrO_2, PbCrO_4\)
3 Rhombohedral
\(a = b = c\)
\(\alpha \beta\) = \(\gamma \neq 90^\circ\)
\(CaCO_3, HgS\)
4 Triclinic
\(a=b = c\)
\(\alpha \neq \beta\) = \(\gamma \neq 90^o\)
\(K_2Cr_2O_7,\, CuSO_4. 5H_2O\)
Explanation:
(c) Rhombohedral crystal system \(a = b = c\), \(\alpha = \beta = \gamma \ne {90^o}\) ex -\(NaN{O_3},\,CaS{O_4}\), calcite \(CaC{O_3}\), \(HgS\)
The Solid State
31900
Tetragonal crystal system has the following unit cell dimensions
1 \(a = b = c\) and \(\alpha = \beta = \gamma = {90^o}\)
2 \(a = b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
3 \(a \ne b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
4 \(a = b \ne c\) and \(\alpha = \beta = {90^o},\,\,\,\gamma = {120^o}\)
Explanation:
(b)Tetragonal system has the unit cell dimension \(a = b \ne c,\,\alpha = \beta = \gamma = 90^\circ \).
The Solid State
31901
Rhombic sulphur has the following structure
1 Open chain
2 Tetrahedral
3 Puckered \(6-\) membered ring
4 Puckered \(8-\) membered ring
Explanation:
The structure of rhombic sulphur is definitely molecular. The \(S8\) molecule is a puckered \(8\) atom ring, with an \(S-S\) distance of \(2.12\, A\)
1 The ionic crystal of \(AgBr\) has Schottky defect
2 The unit cell having crystal parameters, \(a = b \ne c,\,\,\)\(\alpha = \beta = {90^o},\,\,\gamma = {120^o}\) is hexagonal
3 In ionic compounds having Frenkel defect the ratio \(\frac{{{\gamma _ + }}}{{{\gamma _ - }}}\) is high
4 The coordination number of \(N{a^ + }\)ion in \(NaCl\) is \(4\)
Explanation:
(b) A crystal system is hexagonal if its unit cell having \(a = b \ne c\) axial ratio and \(\alpha = \beta = 90^o ,\) \(\gamma = 120^o \) axial angles.
The Solid State
31899
Which of the following is correctCrystal system Axial distance Axial angles example
1 Cubic
\(a \neq b = c\)
\(\alpha= \beta \neq \gamma = 90^\circ\)
\(Cu, KCl\)
2 Monoclinic
\(a\neq b = c\)
\(\alpha=\beta=\gamma = 90^\circ\)
\(PbCrO_2, PbCrO_4\)
3 Rhombohedral
\(a = b = c\)
\(\alpha \beta\) = \(\gamma \neq 90^\circ\)
\(CaCO_3, HgS\)
4 Triclinic
\(a=b = c\)
\(\alpha \neq \beta\) = \(\gamma \neq 90^o\)
\(K_2Cr_2O_7,\, CuSO_4. 5H_2O\)
Explanation:
(c) Rhombohedral crystal system \(a = b = c\), \(\alpha = \beta = \gamma \ne {90^o}\) ex -\(NaN{O_3},\,CaS{O_4}\), calcite \(CaC{O_3}\), \(HgS\)
The Solid State
31900
Tetragonal crystal system has the following unit cell dimensions
1 \(a = b = c\) and \(\alpha = \beta = \gamma = {90^o}\)
2 \(a = b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
3 \(a \ne b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
4 \(a = b \ne c\) and \(\alpha = \beta = {90^o},\,\,\,\gamma = {120^o}\)
Explanation:
(b)Tetragonal system has the unit cell dimension \(a = b \ne c,\,\alpha = \beta = \gamma = 90^\circ \).
The Solid State
31901
Rhombic sulphur has the following structure
1 Open chain
2 Tetrahedral
3 Puckered \(6-\) membered ring
4 Puckered \(8-\) membered ring
Explanation:
The structure of rhombic sulphur is definitely molecular. The \(S8\) molecule is a puckered \(8\) atom ring, with an \(S-S\) distance of \(2.12\, A\)
1 The ionic crystal of \(AgBr\) has Schottky defect
2 The unit cell having crystal parameters, \(a = b \ne c,\,\,\)\(\alpha = \beta = {90^o},\,\,\gamma = {120^o}\) is hexagonal
3 In ionic compounds having Frenkel defect the ratio \(\frac{{{\gamma _ + }}}{{{\gamma _ - }}}\) is high
4 The coordination number of \(N{a^ + }\)ion in \(NaCl\) is \(4\)
Explanation:
(b) A crystal system is hexagonal if its unit cell having \(a = b \ne c\) axial ratio and \(\alpha = \beta = 90^o ,\) \(\gamma = 120^o \) axial angles.
The Solid State
31899
Which of the following is correctCrystal system Axial distance Axial angles example
1 Cubic
\(a \neq b = c\)
\(\alpha= \beta \neq \gamma = 90^\circ\)
\(Cu, KCl\)
2 Monoclinic
\(a\neq b = c\)
\(\alpha=\beta=\gamma = 90^\circ\)
\(PbCrO_2, PbCrO_4\)
3 Rhombohedral
\(a = b = c\)
\(\alpha \beta\) = \(\gamma \neq 90^\circ\)
\(CaCO_3, HgS\)
4 Triclinic
\(a=b = c\)
\(\alpha \neq \beta\) = \(\gamma \neq 90^o\)
\(K_2Cr_2O_7,\, CuSO_4. 5H_2O\)
Explanation:
(c) Rhombohedral crystal system \(a = b = c\), \(\alpha = \beta = \gamma \ne {90^o}\) ex -\(NaN{O_3},\,CaS{O_4}\), calcite \(CaC{O_3}\), \(HgS\)
The Solid State
31900
Tetragonal crystal system has the following unit cell dimensions
1 \(a = b = c\) and \(\alpha = \beta = \gamma = {90^o}\)
2 \(a = b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
3 \(a \ne b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
4 \(a = b \ne c\) and \(\alpha = \beta = {90^o},\,\,\,\gamma = {120^o}\)
Explanation:
(b)Tetragonal system has the unit cell dimension \(a = b \ne c,\,\alpha = \beta = \gamma = 90^\circ \).
The Solid State
31901
Rhombic sulphur has the following structure
1 Open chain
2 Tetrahedral
3 Puckered \(6-\) membered ring
4 Puckered \(8-\) membered ring
Explanation:
The structure of rhombic sulphur is definitely molecular. The \(S8\) molecule is a puckered \(8\) atom ring, with an \(S-S\) distance of \(2.12\, A\)
NEET Test Series from KOTA - 10 Papers In MS WORD
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The Solid State
31898
The correct statement in the following is
1 The ionic crystal of \(AgBr\) has Schottky defect
2 The unit cell having crystal parameters, \(a = b \ne c,\,\,\)\(\alpha = \beta = {90^o},\,\,\gamma = {120^o}\) is hexagonal
3 In ionic compounds having Frenkel defect the ratio \(\frac{{{\gamma _ + }}}{{{\gamma _ - }}}\) is high
4 The coordination number of \(N{a^ + }\)ion in \(NaCl\) is \(4\)
Explanation:
(b) A crystal system is hexagonal if its unit cell having \(a = b \ne c\) axial ratio and \(\alpha = \beta = 90^o ,\) \(\gamma = 120^o \) axial angles.
The Solid State
31899
Which of the following is correctCrystal system Axial distance Axial angles example
1 Cubic
\(a \neq b = c\)
\(\alpha= \beta \neq \gamma = 90^\circ\)
\(Cu, KCl\)
2 Monoclinic
\(a\neq b = c\)
\(\alpha=\beta=\gamma = 90^\circ\)
\(PbCrO_2, PbCrO_4\)
3 Rhombohedral
\(a = b = c\)
\(\alpha \beta\) = \(\gamma \neq 90^\circ\)
\(CaCO_3, HgS\)
4 Triclinic
\(a=b = c\)
\(\alpha \neq \beta\) = \(\gamma \neq 90^o\)
\(K_2Cr_2O_7,\, CuSO_4. 5H_2O\)
Explanation:
(c) Rhombohedral crystal system \(a = b = c\), \(\alpha = \beta = \gamma \ne {90^o}\) ex -\(NaN{O_3},\,CaS{O_4}\), calcite \(CaC{O_3}\), \(HgS\)
The Solid State
31900
Tetragonal crystal system has the following unit cell dimensions
1 \(a = b = c\) and \(\alpha = \beta = \gamma = {90^o}\)
2 \(a = b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
3 \(a \ne b \ne c\) and \(\alpha = \beta = \gamma = {90^o}\)
4 \(a = b \ne c\) and \(\alpha = \beta = {90^o},\,\,\,\gamma = {120^o}\)
Explanation:
(b)Tetragonal system has the unit cell dimension \(a = b \ne c,\,\alpha = \beta = \gamma = 90^\circ \).
The Solid State
31901
Rhombic sulphur has the following structure
1 Open chain
2 Tetrahedral
3 Puckered \(6-\) membered ring
4 Puckered \(8-\) membered ring
Explanation:
The structure of rhombic sulphur is definitely molecular. The \(S8\) molecule is a puckered \(8\) atom ring, with an \(S-S\) distance of \(2.12\, A\)
