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Class 12 Chemistry
The Solid State
Quiz 1
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Which one of the following is non-crystalline or amorphous?
0%
Diamond
0%
Graphite
0%
Glass
0%
Common Salt
Explanation
Glass
NaCl typecrystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying
0%
high temperature
0%
high pressure
0%
high temperature and high pressure
0%
low temperature and low pressure
Explanation
high pressure
How many chloride ions are surrounding sodium ion in sodium chloride crystal ?
0%
4
0%
8
0%
6
0%
12
Explanation
6
In NaCl structure
0%
all octahedral and tetrahedral sites are occupied
0%
only octahedral sites are occupied
0%
only tetrahedral sites are occupied
0%
neither octahedral nor tetrahedral sites are occupied
Explanation
only octahedral sites are occupied
In Zinc blende structure
0%
zinc ions occupy half of the tetrahedral sites
0%
each Zn
0%
each S
0%
it has fee structure
Explanation
each S
Alkali halids do not show Frenkel defect because
0%
cations and anions have almost equal size
0%
there is a large difference in size of cations and anions
0%
cations and anions have low coordination number
0%
anions cannot be accommodated in voids
Explanation
cations and anions have almost equal size
The coordination number of Y will be in the XY types of crystal:
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6
0%
8
0%
12
0%
4
Explanation
6
The fraction of the total volume occupied by the atoms present in a simple cube is
0%
\(\frac{π}{4}\)
0%
\(\frac{π}{6}\)
0%
\(\frac{π}{3√2}\)
0%
\(\frac{π}{4√2}\)
Explanation
\(\frac{π}{6}\)
Edge length of unit cell of chromium metal is 287 pm with bcc arrangement. The atomic radius is of the order
0%
287 pm
0%
574 pm
0%
124.27 pm
0%
143.5 pm
Explanation
124.27 pm
The edge length of fee cell is 508 pm. If radius of cation is 110 pm, the radius of anion is
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110 pm
0%
220 pm
0%
285 pm
0%
144 pm
Explanation
144 pm
The density of a metal which crystallises in bcc lattice with unit cell edge length 300 pm and molar mass 50 g mol
0%
10 g cm
0%
14.2 g cm
0%
6.15 g cm
0%
9.3 2 g cm
Explanation
6.15 g cm
How many lithium atoms are present in a unit cell with edge length 3.5 Å and density 0.53 g cm
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2
0%
1
0%
4
0%
6
Explanation
2
The distance between Na
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564 pm
0%
282 pm
0%
234 pm
0%
538 pm
Explanation
282 pm
An element with atomic mass 100 has a bcc structure and edge length 400 pm. The density of element is
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10.37 g cm
0%
5.19 g cm
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7.29 g cm
0%
2.14 g cm
Explanation
5.19 g cm
Fe
0%
normal spinel structure
0%
inverse spinel structure
0%
fluoride structure
0%
anti fluorite structure
Explanation
inverse spinel structure
Which of the following crystals does not exhibit Frenkel defect?
0%
AgBr
0%
AgCl
0%
KBr
0%
ZnS
Explanation
KBr
What type of stoichiometric defect is shown by ZnS?
0%
Schottky defect
0%
Frenkel defect
0%
Both Frenkel and Schottky defects
0%
Non-stoichiometric defect
Explanation
Frenkel defect
Silver halides generally show
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Schottky defect
0%
Frenkel defect
0%
Both Frenkel and Schottky defects
0%
cation excess defect
Explanation
Both Frenkel and Schottky defects
Which of the following will have metal deficiency defect?
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NaCl
0%
FeO
0%
KCl
0%
ZnO
Explanation
FeO
In which pair most efficient packing is present?
0%
hep and bcc
0%
hep and ccp
0%
bcc and ccp
0%
bcc and simple cubic cell
Explanation
hep and ccp
0 h : 0 m : 1 s
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