solid state 2
Quiz
•
Chemistry
•
11th - 12th Grade
•
Hard
M Kumar
Used 4+ times
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40 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The packing efficiency in simple, fcc, bcc unit cells will be respectively
74% 52.4% 68%
52.4% 68% 74%
68% 74% 52.4%
52.4% 74% 68%
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The relationship between the atomic radius (r) and edge length (a) of a simple, fcc, bcc cubic unit cell will be respectively
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The coordination number in simple, fcc, bcc close packing arrangement will be respectively
1, 4, 2
6, 12, 8
4, 6, 8
none of the above
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The total number of tetrahedral voids and octahedral voids in a given cubic unit cell with N number of atoms will be respectively
2N and N
N and 2N
4N and N
N and 4N
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In METAL EXCESS DEFECTS the sites where an electron gets trapped in the anionic vacancy disturbing the ratio of cation to anion is known as
E- CENTRE
F- CENTRE
G- CENTRE
I- CENTRE
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The total number of tetrahedral voids and octahedral voids per unit cell of face-centred cell (fcc) are
8, 4
4, 8
2, 4
4, 2
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The relationship between the radius (r) of the tetrahedral void and the radius (R) of the atoms in close packing is
r = 0.155 R
r = 0.225 R
r = 0.414 R
r = 0.732 R
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