Solid State Test

Result

Solid State Test - 18

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Weekly Quiz Competition

Question 1
4 / -1

The available space occupied by spheres of equal size in three dimensions in both hcp and ccp arrangement is

A
74%

B
70%

C
60.4%

D
52.4%
Question 2
4 / -1

In a face centred cubic lattice, the number of nearest neighbours for a given lattice point is

A
6

B
8

C
12

D
14
Question 3
4 / -1

The structure of TICI is similar to CsCl. What would be the radius ratio in TICI ?

A
0.155 - 0.225

B
0.225 – 0.414

C
0.414 – 0.732

D
0.732 – 1.000
Question 4
4 / -1

The formula for determination of density of unit cell is:

A

B

C

D

Solution
Question 5
4 / -1

The ionic radii are in the order

A
Na⁺ < Mg²⁺ < Al³⁺

B
Na⁺ > Mg²⁺ > Al³⁺

C
Al³⁺ < Mg²⁺ > Na+

D
Mg²⁺ < Na⁺ < Al³⁺
Question 6
4 / -1

The correct order of increasing radii of the ions Br^‒, F^‒, O^2‒ and S^2‒ is as follows:

A
Br^‒,< F^‒ < O^2‒ < S^2‒

B
S^2‒< O^2‒ < F^‒ < Br^‒,

C
F^‒ < O^2‒ < S^2‒ < Br^‒

D
F^‒ < Br^‒ < O^2‒< S^2‒
Question 7
4 / -1

The tetrahedral voids formed by ccp arrangement of Cl^‒ ions in rock salt structure are

A
occupied by Na⁺ ions

B
occupied by Cl^‒ ions

C
occupied by either Na⁺ or Cl^‒ ions

D
vacant
Question 8
4 / -1

The co-ordination number of Cs⁺ and Cl^- ions in CsCl structure is

A
4 : 4

B
6 : 6

C
8 : 8

D
4 : 8
Question 9
4 / -1

The co-ordination number of Zn²⁺ and S^2-ions in the zinc blende (ZnS) type structure is

A
4 : 4

B
6 : 6

C
8 : 8

D
4 : 8
Question 10
4 / -1

Which one of the following statements is wrong about zinc blende type structure ?

A
Each Zn²⁺ ion is surrounded tetrahedrally by four S^2- ion and each S^2- ion by four Zn²⁺ ions

B
S^2- ions form fcc arrangement

C
AgBr has zinc blende type structure

D
Cuprous halides have zinc blende type structure