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15 questions
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- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not a crystal line solid?
KCl
CsCl
Glass
Rhombic S
- Multiple ChoicePlease save your changes before editing any questions.
In graphite, electron are
Localised on each carbon atom
Spread out between the sheets
Localised on every third carbon atom
Present in anti bonding crystal
- Multiple ChoicePlease save your changes before editing any questions.
The most unsymmetrical crystal system is
Cubic
Hexagonal
Triclinic
Orthorombic
- Multiple ChoicePlease save your changes before editing any questions.
ccp tallies with
bcc
fcc
hcp
none of these
- Multiple ChoicePlease save your changes before editing any questions.
The coordination number of each Atom in bcc is
4
6
8
12
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following describes the hexagonal close packed arrangement of sphere
ABCABC
ABCABA
ABABA
ABBAA
- Multiple ChoicePlease save your changes before editing any questions.
The number of octahedral sites and tetrahedra sites per sphere in FCC structure
1 & 2
4&8
8&4
2&4
- Multiple ChoicePlease save your changes before editing any questions.
Schottky Defect and frenkal Defect is likely to be found in
ZnS
AgBr
AgI
NaCl
- Multiple ChoicePlease save your changes before editing any questions.
As a result of frenkal Defect
No effect on density
Density decrease
Density increase
None of these
- Multiple ChoicePlease save your changes before editing any questions.
ZnO is white when cold and yellow when heated, it is due to Development of
Frenkel defect
Schottky Defect
Metal excess defect
Metal deficiency Defect
- Multiple ChoicePlease save your changes before editing any questions.
When NaCl crystal is doped with SrCl2, the nature of Defect produced is
Schottky Defect
Frenkel Defect
Metal excess Defect
Impurity defect
- Multiple ChoicePlease save your changes before editing any questions.
Close packing is Maximum in the crystal lattice of
Simple cubic
fcc
bcc
End Centred
- Multiple ChoicePlease save your changes before editing any questions.
A compound contains P&Q elements. Atoms Q are in ccp arrangement while P occupy all tetrahedra sites. Formula of compund is
PQ
PQ2
P2Q
P3Q
- Multiple ChoicePlease save your changes before editing any questions.
A face centred cubic element atomic mass 60 has a Cell edge of 400 pm. What is its density?
6.2g/cm
24.8g/cm
12.4g/cm
3.1g/cm
- Multiple ChoicePlease save your changes before editing any questions.
Transition element Show defect
Schottky Defect
Frenkel Defect
Metal excess Defect
Metal deficiency Defect