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- 1. Multiple Choice
An example of crystalline solid is --------
rubber
plastic
gel
graphite
- 2. Multiple Choice
Graphite is an example of -------- solid
ionic
covalent
molecular
metallic
- 3. Multiple Choice
In ----- crystal system, and
Cubic
hexagonal
triclinic
tetragonal
- 4. Multiple Choice
Bravais lattices possible for orthorhombic system are----
Simple, FC, BC
Simple, FC, BC, EC
Simple
Simple, BC
- 5. Multiple Choice
Number of atoms per unit cell in FCC lattice is -----
1
2
3
4
- 6. Multiple Choice
An example of molecular crystal is -----
NaCl
Graphite
ice
Gold
- 7. Multiple Choice
Total number of Bravais lattices possible for Crystal system is
7
14
32
230
- 8. Fill in the Blank
---------- is the Nobel prize winner for diffraction of X-rays in 1914
- 9. Fill in the Blank
An intersection of two adjacent faces is called as ------
- 10. Fill in the Blank
The arrangement of atoms in different sites in 3D space is called --------
- 11. Multiple Choice
Cubic crystal system have---- planes and ------ axes of symmetry
6, 12
9, 1
9,13
6,3
- 12. Poll
Five fold symmetry is not found in crystals
TRUE
FALSE
- 13. Multiple Choice
AN ANGLE OF FOUR FOLD AXIS OF SYMMETRY IS ----
360
120
90
60
- 14. Fill in the Blank
The second order Bragg diffraction of x-rays of wavelength 1angstrom from a set of parallel planes in a metal occurs at an angle 60ο calculate the inter-planar distance is ---- angstrom
- 15. Multiple Choice
A Match Box exhibits---------- geometry
Cubic
Monoclinic
Orthorhombic
Tetragonal
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