States of Matter-Solid State (NEET Chemistry): Questions 34 - 39 of 52

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Question number: 34

» States of Matter » Solid State » Calculations Involving Unit Cell Parameters

MCQ▾

Question

Sodium metal exists in the bcc unit cell. The distance between nearest sodium atoms is 0.368 nm. The edge length of the unit cell is?

Choices

Choice (4) Response

a.

1.67 nm

b.

0.425 nm

c.

0.563 nm

d.

1.451 nm

Question number: 35

» States of Matter » Solid State » Covalent and Metallic Solids

MCQ▾

Question

The crystal that have metal ion as lattice point surrounded by a sea of mobile electrons is known as?

Choices

Choice (4) Response

a.

Covalent crystal

b.

Metallic crystal

c.

Ionic crystal

d.

Molecular crystal

Question number: 36

» States of Matter » Solid State » Covalent and Metallic Solids

MCQ▾

Question

Which of the following is an example of covalent crystal?

Choices

Choice (4) Response

a.

Aluminium nitride

b.

Silicon carbide

c.

Diamond

d.

Tin oxide

Question number: 37

» States of Matter » Solid State » Imperfection in Solids

MCQ▾

Question

Which of the following expression can give the number of point defects per unit volume?

Choices

Choice (4) Response

a.

n=Ne2W/RT

b.

n=N/eW/2RT

c.

n=NeW/2RT

d.

n=NeW/RT

Question number: 38

» States of Matter » Solid State » Calculations Involving Unit Cell Parameters

MCQ▾

Question

Lithium forms body centered cubic crystals. Calculate the atomic radius of lithium if the length of the side of a unit cell of lithium is 351 pm?

Choices

Choice (4) Response

a.

201.70 pm

b.

143.93 pm

c.

151.98 pm

d.

271 pm

Question number: 39

» States of Matter » Solid State » Imperfection in Solids

MCQ▾

Question

Which of the following is not happened as the consequence of Shottky defect?

Choices

Choice (4) Response

a.

Entropy increases

b.

No change in density

c.

Crystalline stability decrease

d.

All of the above

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