1
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the length of the body diagonal of a FCC unit cell is $x \mathop {\rm{A}}\limits^{\rm{o}}$, the distance between two octahedral voids in the cell in $\mathop {\rm{A}}\limits^{\rm{o}}$ is

A

$\frac{x}{\sqrt{2}}$

B

$\frac{x}{\sqrt{3}}$

C

$\frac{x}{\sqrt{6}}$

D

$\frac{x}{\sqrt{8}}$

2
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The number of nearest neighbours in a bcc unit cell is

A

12

B

8

C

6

D

4

3
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The correct option for axial distances and axial angles for hexagonal crystal system is

A

$a \neq b \neq c, \alpha \neq \beta \neq \gamma=90^{\circ}$

B

$a=b \neq c, \alpha=\beta=\gamma=90^{\circ}$

C

$a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ}$

D

$a \neq b \neq c, \alpha=\beta=\gamma=90^{\circ}$

4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Iron crystalises in FCC with an edge length of 400 pm . If it contains $0.1 \%$ Schottky defects, calculate its approximate density

[Atomic weight of $\mathrm{Fe}=56 \mathrm{~g} / \mathrm{mol}$ ]

A

$5.8 \mathrm{~g} / \mathrm{cm}^3$

B

$1.5 \mathrm{~g} / \mathrm{cm}^3$

C

$2.9 \mathrm{~g} / \mathrm{cm}^3$

D

$8.5 \mathrm{~g} / \mathrm{cm}^3$

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