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XII CHEMISTRY SOLID STATE

Authored by Umesh Sharma

Chemistry

12th Grade

Used 13+ times

XII CHEMISTRY SOLID STATE
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40 questions

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1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

The number of atoms per unit cell in simple, fcc and bcc unit cells are

1, 4, 2

1, 2, 4

2, 1, 4

2, 4, 1

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

In 3D close packing the ABCABCABC.....pattern gives rise to which type of close packing?

Hexagonal Close Packing (hcp)

Cubic Close Packing (ccp)

Face Centred Cubic Packing (fcc)

Both ccp and fcc

3.

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%

4.

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

a2\frac{a}{2} 2a4\frac{\sqrt{2}a}{4} 3a4\frac{\sqrt{3}a}{4}

a2\frac{a}{2} 3a4\frac{\sqrt{3}a}{4} 2a4\frac{\sqrt{2}a}{4}

2a4\frac{\sqrt{2}a}{4} 3a4\frac{\sqrt{3}a}{4} a2\frac{a}{2}

3a4\frac{\sqrt{3}a}{4} a2\frac{a}{2} 3a4\frac{\sqrt{3}a}{4}

5.

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

6.

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

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What type of material is this one?

Crystal

Amorphous

Covalent Crystal

Ionic Crystal

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