The Solid State Practice Questions - DPP for JEE

 Page 1


PART-I (Single Correct MCQs)
1. The cubic unit cell of a metal (molar mass = 63.55g mol
–1
) has an edge
length of 362 pm. Its density is 8.92g cm
–3
.
The type of unit cell is
(a) primitive
(b) face centered
(c) body centered
(d) end centered
2. Coordination numbers of Zn
2+
 and S
2–
 in the crystal structure of wurtzite
are
(a) 4, 4
(b) 6, 6
(c) 8, 4
(d) 8, 8
3. The coordination number X (........) of each ion in KBr is changed to Y
Page 2


PART-I (Single Correct MCQs)
1. The cubic unit cell of a metal (molar mass = 63.55g mol
–1
) has an edge
length of 362 pm. Its density is 8.92g cm
–3
.
The type of unit cell is
(a) primitive
(b) face centered
(c) body centered
(d) end centered
2. Coordination numbers of Zn
2+
 and S
2–
 in the crystal structure of wurtzite
are
(a) 4, 4
(b) 6, 6
(c) 8, 4
(d) 8, 8
3. The coordination number X (........) of each ion in KBr is changed to Y
(..........) by.............
(a) X = 6 to Y = 8 applying higher temperature
(b) X = 8 to Y = 6 applying high pressure
(c) X = 6 to Y = 8 applying high pressure
(d) None of these
4. The radius of Li
+
 ion is 60pm and that of  is 136 pm. Structure of
LiF and coordination number is
(a) Like NaCl, C.No. = 6
(b) Like CsCl, C.No. = 8
(c) Anti fluoride, C.No. = 8
(d) None of these
5. The number of carbon atoms per unit cell of diamond unit cell is
:
(a) 8
(b) 6
(c) 1
(d) 4
6. The pyknometric density of sodium chloride crystal is2.165 × 10
3
 kg m
–3
while its X-ray density is 2.178 × 10
3
 kg m
–3
. The fraction of
unoccupied sites in sodium chloride crystal is
(a) 5.96 × 10
–3
(b) 5.96 × 10
4
(c) 5.96 × 10
–2
(d) 5.96 × 10
–1
7. Which of the folliowing metal oxides is anti-ferromagnetic in nature?
(a) MnO
2
(b) TiO
2
Page 3


PART-I (Single Correct MCQs)
1. The cubic unit cell of a metal (molar mass = 63.55g mol
–1
) has an edge
length of 362 pm. Its density is 8.92g cm
–3
.
The type of unit cell is
(a) primitive
(b) face centered
(c) body centered
(d) end centered
2. Coordination numbers of Zn
2+
 and S
2–
 in the crystal structure of wurtzite
are
(a) 4, 4
(b) 6, 6
(c) 8, 4
(d) 8, 8
3. The coordination number X (........) of each ion in KBr is changed to Y
(..........) by.............
(a) X = 6 to Y = 8 applying higher temperature
(b) X = 8 to Y = 6 applying high pressure
(c) X = 6 to Y = 8 applying high pressure
(d) None of these
4. The radius of Li
+
 ion is 60pm and that of  is 136 pm. Structure of
LiF and coordination number is
(a) Like NaCl, C.No. = 6
(b) Like CsCl, C.No. = 8
(c) Anti fluoride, C.No. = 8
(d) None of these
5. The number of carbon atoms per unit cell of diamond unit cell is
:
(a) 8
(b) 6
(c) 1
(d) 4
6. The pyknometric density of sodium chloride crystal is2.165 × 10
3
 kg m
–3
while its X-ray density is 2.178 × 10
3
 kg m
–3
. The fraction of
unoccupied sites in sodium chloride crystal is
(a) 5.96 × 10
–3
(b) 5.96 × 10
4
(c) 5.96 × 10
–2
(d) 5.96 × 10
–1
7. Which of the folliowing metal oxides is anti-ferromagnetic in nature?
(a) MnO
2
(b) TiO
2
(c) VO
2
(d) CrO
2
8. Which of the following solids is not an electrical conductor?
(a) Mg (s)
(b) TiO (s)
(c) I
2
 (s)
(d) H
2
O (s)
9. The unit cell dimensions of a cubic lattice (edges a, b, c and the angles
between them, a, ß and ?) are
(a) a = b = c, a = ß =  ? = 90
0
(b) a = b ? c, a = ß =  ? = 90
0
(c) a = b = c,a = ? = 90
0
,
 
ß ? 90
0
(d) a ? b ? c,a = ß = 90
0
,
 
? ? 90
0
10. The pure crystalline substance on being heated gradually first forms a
turbid liquid at constant temperature and still at higher temperature
turbidity completely disappears. The behaviour is a characteristic of
substance forming.
(a) Allotropic crystals
(b) Liquid crystals
(c) Isomeric crystals
(d) Isomorphous crystals.
11. Consider the radii 0.095 nm (Na
+
), 0.181 nm (Cl
–
), 0.074 nm (Zn
2+
),
0.184 nm (S
2–
), 0.068 nm (Ti
4+
), 0.140 nm (O
2–
), 0.169 nm (Cs
+
).
Choose the correct option from among the following. (Use radius ratio
Page 4


PART-I (Single Correct MCQs)
1. The cubic unit cell of a metal (molar mass = 63.55g mol
–1
) has an edge
length of 362 pm. Its density is 8.92g cm
–3
.
The type of unit cell is
(a) primitive
(b) face centered
(c) body centered
(d) end centered
2. Coordination numbers of Zn
2+
 and S
2–
 in the crystal structure of wurtzite
are
(a) 4, 4
(b) 6, 6
(c) 8, 4
(d) 8, 8
3. The coordination number X (........) of each ion in KBr is changed to Y
(..........) by.............
(a) X = 6 to Y = 8 applying higher temperature
(b) X = 8 to Y = 6 applying high pressure
(c) X = 6 to Y = 8 applying high pressure
(d) None of these
4. The radius of Li
+
 ion is 60pm and that of  is 136 pm. Structure of
LiF and coordination number is
(a) Like NaCl, C.No. = 6
(b) Like CsCl, C.No. = 8
(c) Anti fluoride, C.No. = 8
(d) None of these
5. The number of carbon atoms per unit cell of diamond unit cell is
:
(a) 8
(b) 6
(c) 1
(d) 4
6. The pyknometric density of sodium chloride crystal is2.165 × 10
3
 kg m
–3
while its X-ray density is 2.178 × 10
3
 kg m
–3
. The fraction of
unoccupied sites in sodium chloride crystal is
(a) 5.96 × 10
–3
(b) 5.96 × 10
4
(c) 5.96 × 10
–2
(d) 5.96 × 10
–1
7. Which of the folliowing metal oxides is anti-ferromagnetic in nature?
(a) MnO
2
(b) TiO
2
(c) VO
2
(d) CrO
2
8. Which of the following solids is not an electrical conductor?
(a) Mg (s)
(b) TiO (s)
(c) I
2
 (s)
(d) H
2
O (s)
9. The unit cell dimensions of a cubic lattice (edges a, b, c and the angles
between them, a, ß and ?) are
(a) a = b = c, a = ß =  ? = 90
0
(b) a = b ? c, a = ß =  ? = 90
0
(c) a = b = c,a = ? = 90
0
,
 
ß ? 90
0
(d) a ? b ? c,a = ß = 90
0
,
 
? ? 90
0
10. The pure crystalline substance on being heated gradually first forms a
turbid liquid at constant temperature and still at higher temperature
turbidity completely disappears. The behaviour is a characteristic of
substance forming.
(a) Allotropic crystals
(b) Liquid crystals
(c) Isomeric crystals
(d) Isomorphous crystals.
11. Consider the radii 0.095 nm (Na
+
), 0.181 nm (Cl
–
), 0.074 nm (Zn
2+
),
0.184 nm (S
2–
), 0.068 nm (Ti
4+
), 0.140 nm (O
2–
), 0.169 nm (Cs
+
).
Choose the correct option from among the following. (Use radius ratio
rules)
(a) Na
+
 ions are packed in octahedral holes between the planes of close-
packed Cl
–
 ions.
(b) Zn
2+
 ions are packed in tetrahedral holes
(c) Cs
+
 ions are packed in a simple cubic array of Cl
–
 ions
(d) All of these
12. The ratio of inner planar distancess of three types of planes 
 for simple cubic lattice are
(a)
(b)
(c)
(d)
13. For a cubic geometry the limiting  is :
(a) 0.414
(b) 0.155
(c) > 0.731
(d) 0.731
14. The incorrect statement for the sulphur atom of ZnS is
(a) As  is larger than  only 4 rather than 6 or 8  can be
packed around .
(b) Its structure is similar to diamond except that alternate atoms are Zn and
S.
(c) As  is larger than  only 6 rather than 8 or 4 sulphide ions can
Page 5


PART-I (Single Correct MCQs)
1. The cubic unit cell of a metal (molar mass = 63.55g mol
–1
) has an edge
length of 362 pm. Its density is 8.92g cm
–3
.
The type of unit cell is
(a) primitive
(b) face centered
(c) body centered
(d) end centered
2. Coordination numbers of Zn
2+
 and S
2–
 in the crystal structure of wurtzite
are
(a) 4, 4
(b) 6, 6
(c) 8, 4
(d) 8, 8
3. The coordination number X (........) of each ion in KBr is changed to Y
(..........) by.............
(a) X = 6 to Y = 8 applying higher temperature
(b) X = 8 to Y = 6 applying high pressure
(c) X = 6 to Y = 8 applying high pressure
(d) None of these
4. The radius of Li
+
 ion is 60pm and that of  is 136 pm. Structure of
LiF and coordination number is
(a) Like NaCl, C.No. = 6
(b) Like CsCl, C.No. = 8
(c) Anti fluoride, C.No. = 8
(d) None of these
5. The number of carbon atoms per unit cell of diamond unit cell is
:
(a) 8
(b) 6
(c) 1
(d) 4
6. The pyknometric density of sodium chloride crystal is2.165 × 10
3
 kg m
–3
while its X-ray density is 2.178 × 10
3
 kg m
–3
. The fraction of
unoccupied sites in sodium chloride crystal is
(a) 5.96 × 10
–3
(b) 5.96 × 10
4
(c) 5.96 × 10
–2
(d) 5.96 × 10
–1
7. Which of the folliowing metal oxides is anti-ferromagnetic in nature?
(a) MnO
2
(b) TiO
2
(c) VO
2
(d) CrO
2
8. Which of the following solids is not an electrical conductor?
(a) Mg (s)
(b) TiO (s)
(c) I
2
 (s)
(d) H
2
O (s)
9. The unit cell dimensions of a cubic lattice (edges a, b, c and the angles
between them, a, ß and ?) are
(a) a = b = c, a = ß =  ? = 90
0
(b) a = b ? c, a = ß =  ? = 90
0
(c) a = b = c,a = ? = 90
0
,
 
ß ? 90
0
(d) a ? b ? c,a = ß = 90
0
,
 
? ? 90
0
10. The pure crystalline substance on being heated gradually first forms a
turbid liquid at constant temperature and still at higher temperature
turbidity completely disappears. The behaviour is a characteristic of
substance forming.
(a) Allotropic crystals
(b) Liquid crystals
(c) Isomeric crystals
(d) Isomorphous crystals.
11. Consider the radii 0.095 nm (Na
+
), 0.181 nm (Cl
–
), 0.074 nm (Zn
2+
),
0.184 nm (S
2–
), 0.068 nm (Ti
4+
), 0.140 nm (O
2–
), 0.169 nm (Cs
+
).
Choose the correct option from among the following. (Use radius ratio
rules)
(a) Na
+
 ions are packed in octahedral holes between the planes of close-
packed Cl
–
 ions.
(b) Zn
2+
 ions are packed in tetrahedral holes
(c) Cs
+
 ions are packed in a simple cubic array of Cl
–
 ions
(d) All of these
12. The ratio of inner planar distancess of three types of planes 
 for simple cubic lattice are
(a)
(b)
(c)
(d)
13. For a cubic geometry the limiting  is :
(a) 0.414
(b) 0.155
(c) > 0.731
(d) 0.731
14. The incorrect statement for the sulphur atom of ZnS is
(a) As  is larger than  only 4 rather than 6 or 8  can be
packed around .
(b) Its structure is similar to diamond except that alternate atoms are Zn and
S.
(c) As  is larger than  only 6 rather than 8 or 4 sulphide ions can
be placed around  ions.
(d) ZnS is a covalent  compound.
15. AB; crystallizes in a body centred cubic lattice with edge length ‘a’
equal to 387 pm. The distance between two oppositely charged ions in
the lattice is :
(a) 335 pm
(b) 250 pm
(c) 200 pm
(d) 300 pm
16. How many unit cells are present in a cube-shaped ideal crystal of NaCl
of mass 1.00 g ?
[Atomic masses : Na = 23, Cl = 35.5]
(a) 5.14 × 10
21
 unit cells
(b) 1.28 × 10
21
 unit cells
(c) 1.71 × 10
21
 unit cells
(d) 2.57 × 10
21
 unit cells
17. The interionic distance for caesium chloride crystal will be
(a) a
(b)
(c)
(d)
18. For fcc if AB is just like the rock salt like structure then, A
+
 and B
–
 are
located at –