# JEE Advanced > Solid State

Explore popular questions from Solid State for JEE Advanced. This collection covers Solid State previous year JEE Advanced questions hand picked by experienced teachers.

Physics
Chemistry
Mathematics
Q 1.

Correct4

Incorrect-1

The edge length of a face-centered cubic unit cell is {tex}508{/tex} pin. If the radius of the cation is {tex} 110 \mathrm { pm } {/tex}, the radius of the anion is

{tex} 144 \mathrm { pm } {/tex}

B

{tex} 288 \mathrm { pm } {/tex}

C

{tex} 618 \mathrm { pm } {/tex}

D

{tex} 398 \mathrm { pm } {/tex}

##### Explanation

Q 2.

Correct4

Incorrect-1

Analysis show that nickel oxide consists of nickel ion with {tex} 96 \% {/tex} ions having {tex} \mathrm { d } ^ { 8 } {/tex} configuration and {tex} 4 \% {/tex} having {tex} \mathrm { d } ^ { 7 } {/tex} configuration. Which amongst the following best represents the formula of the oxide?

A

{tex} \mathrm { Ni } _ { 1.02 } \mathrm { O } _ { 1.00 } {/tex}

B

{tex} \mathrm { Ni } _ { 0.96 } \mathrm { O } _ { 1.00 } {/tex}

C

{tex} \mathrm { Ni } _ { 0.98 } \mathrm { O } _ { 0.98 } {/tex}

{tex} \mathrm { Ni } _ { 0.98 } \mathrm { O } _ { 1.00 } {/tex}

##### Explanation

Q 3.

Correct4

Incorrect-1

The {tex} \gamma {/tex} -form of iron has fcc-structure (edge length {tex} 386 \mathrm { pm } {/tex} ) and {tex} \beta {/tex} -form has bcc structure (edge length {tex} 290 \mathrm { pm } {/tex} ). The ratio of density in {tex} \gamma {/tex} -form and {tex} \beta {/tex} -form is

0.9788

B

1.02

C

1.57

D

0.6344

##### Explanation

Q 4.

Correct4

Incorrect-1

What is the maximum number of layers of atoms in close packed planes that will lie within two imaginary parallel planes having a distance between them of {tex} 13 \sqrt { \frac { 2 } { 3 } } r {/tex} (where {tex} r {/tex} is the radius of atom ) in the copper crystal (fcc)?
(Consider the atoms to be within the parallel planes if their centers are on or with in the two parallel planes)

A

5

B

6

7

D

8

##### Explanation

Q 5.

Correct4

Incorrect-1

The packing fraction for a body-centered cube is

A

0.42

B

0.53

0.68

D

0.82

##### Explanation

Q 6.

Correct4

Incorrect-1

The coordination number of {tex}\mathrm {Al} {/tex} in the crystalline state of {tex}\mathrm {AlCl } _ { 3 } {/tex} is

A

2

B

4

6

D

8

##### Explanation

Q 7.

Correct4

Incorrect-1

When molten zinc is cooled to solid state, it assumes hcp structure. Then the number of nearest neighbours of zinc atom will be

A

4

B

6

C

8

12

##### Explanation

Q 8.

Correct4

Incorrect-1

A molecule {tex} \mathrm {A _ { 2 } B ( M w = 166.4 }) {/tex} occupies triclinic lattice with {tex} a = 5 {\text{Å}} , b = 8{\text{Å}} {/tex} and {tex} c = 4{\text{Å}} {/tex} If the density of {tex} \mathrm {A B} _ { 2 } {/tex} is {tex} 5.2 \mathrm { g } \mathrm { cm } ^ { - 3 } {/tex}, the number of molecules present in one unit cell is

A

2

3

C

4

D

5

##### Explanation

Q 9.

Correct4

Incorrect-1

What type of crystal defect is indicated in the diagram given below

A

Both Frenkel and Schottky defects

Schottky defect

C

Interstitial defect

D

Frenkel defect

##### Explanation

Q 10.

Correct4

Incorrect-1

The number of hexagonal faces that are present in a truncated octahedron is

A

2

B

4

C

6

8