Solid State MCQs | Question – Paper 1 4

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Topic: Solid State, Test No.: 01, Total MCQs: 15

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Question 1

The number of octahedral void(s) per atom present in a cubic close-packed structure is [CBSE AIPMT 2012]

A

2

B

4

C

1

D

3

Question 2

A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is [CBSE AIPMT 2012]

A

144 pm

B

204 pm

C

288 pm

D

408 pm

Question 3

AB crystallizes in a body centred cubic lattice with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is [CBSE AIPMT 2010]

A

300 pm

B

335 pm

C

250 pm

D

200 pm

Question 4

If 'a' stands for the edge length of the cubic systems: simple cubic, body centred cubic and face centred cubic, then the ratio of the radii of the spheres in these systems will be respectively: [CBSE AIPMT 2008]

A

B

C

D

Question 5

Percentage of free space in a body centred cubic unit cell is [CBSE AIPMT 2008]

A

32%

B

34%

C

28%

D

20%

Question 6

The fraction of total volume occupied by the atoms present in a simple cube is [CBSE AIPMT 2007]

A

B

C

D

Question 7

If NaCl is doped with 10–4 mol % of Sr Cl2, the concentration of cation vacancies will be (NA = 6.02 × 1023 mol–1) [CBSE AIPMT 2007]

A
6.02 × 1016 mol–1
B
6.02 × 1017 mol–1
C
6.02 × 1014 mol–1
D
6.02 × 1015 mol–1
Question 8

The appearance of colour in solid alkali metal halides is generally due to [CBSE AIPMT  2006]

A

Schottky defect

B

Frenkel defect

C

Interstitial position

D

F-centres

Question 9

In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells? [CBSE AIPMT 2005]

A
2
B
4
C
6
D
8
Question 10

A compound formed by elements X and Y crystallizes in a cubic structure in which atoms X are at the corners of the cube and atoms Y are at the face-centers. The formula of the compound is [CBSE AIPMT 2004]

A

X3Y

B

XY

C

XY2

D

XY3

Question 11

The pyknometric density of sodium chloride crystal is 2.165 ×103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of the unoccupied sites in sodium chloride crystal is [CBSE AIPMT 2003]

A
5.96
B
5.96 × 10–2
C
5.96 × 10–1
D
5.96 × 10–3
Question 12

In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3 rd of tetrahedral voids. The formula of the compound will be [AIEEE 2008]

A

X3Y4

B

X4Y3

C

X2Y3

D

X2Y

Question 13

Total volume of atoms present in face-centred cubic unit cell of metal is (r is atomic radius) [AIEEE 2006]

A

pr3

B

pr3

C

pr3

D

pr3

Question 14

An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of faces of the cube. The empirical formula of the compound would be [AIEEE 2005]

A

AB

B

A2B

C

AB3

D

A3B

Question 15

How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.0 g? [AIEEE 2003]

A
5.14 × 1021 unit cells
B
1.28 × 1021 unit cells
C
1.71 × 1021 unit cells
D
2.57 × 1021 unit cells
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