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- 1. Multiple Choice
Which of the following is not a crystal line solid?
KCl
CsCl
Glass
Rhombic S
- 2. Multiple Choice
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
- 3. Multiple Choice
The most unsymmetrical crystal system is
Cubic
Hexagonal
Triclinic
Orthorombic
- 4. Multiple Choice
ccp tallies with
bcc
fcc
hcp
none of these
- 5. Multiple Choice
The coordination number of each Atom in bcc is
4
6
8
12
- 6. Multiple Choice
Which of the following describes the hexagonal close packed arrangement of sphere
ABCABC
ABCABA
ABABA
ABBAA
- 7. Multiple Choice
The number of octahedral sites and tetrahedra sites per sphere in FCC structure
1 & 2
4&8
8&4
2&4
- 8. Multiple Choice
Schottky Defect and frenkal Defect is likely to be found in
ZnS
AgBr
AgI
NaCl
- 9. Multiple Choice
As a result of frenkal Defect
No effect on density
Density decrease
Density increase
None of these
- 10. Multiple Choice
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
- 11. Multiple Choice
When NaCl crystal is doped with SrCl2, the nature of Defect produced is
Schottky Defect
Frenkel Defect
Metal excess Defect
Impurity defect
- 12. Multiple Choice
Close packing is Maximum in the crystal lattice of
Simple cubic
fcc
bcc
End Centred
- 13. Multiple Choice
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
- 14. Multiple Choice
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
- 15. Multiple Choice
Transition element Show defect
Schottky Defect
Frenkel Defect
Metal excess Defect
Metal deficiency Defect
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