1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
The vacant space in bcc lattice unit cell is
A
48%
B
23%
C
32%
D
26%
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
The correct statement regarding defects in crystalline solids is
A
Frenkel defects decrease the density of crystalline solids
B
Frenkel defect is a dislocation defect
C
Frenkel defect is found in halides of alkaline metals
D
Schottky defects have no effect on the density of crystalline solids.
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A given metal crystallises out with a cubic structure having edge length of 361 pm. If there are four metal atoms in one unit cell, what is the radius of one atom?
A
80 pm
B
108 pm
C
40 pm
D
127 pm
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
If $$a$$ is the length of the side of a cube, the distance between the body centered atom and one corner atom in the cube will be
A
$${2 \over {\sqrt 3 }}a$$
B
$${4 \over {\sqrt 3 }}a$$
C
$${{\sqrt 3 } \over 4}a$$
D
$${{\sqrt 3 } \over 2}a$$
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