NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 500 - 506 of 1258

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Question number: 500

» States of Matter » Solid State » Imperfection in Solids

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MCQ▾

Question

In potassium chloride crystal, what type of defects may arise generally?

Choices

Choice (4) Response

a.

Fankels defect

b.

Shottky defect

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 501

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

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MCQ▾

Question

A unit cell of sodium chloride has four formula units. The edge length of unit cell is 0.64 nm. What is the density of sodium chloride?

Choices

Choice (4) Response

a.

2.16 g/cm3

b.

3.22 g/cm3

c.

7.23 g/cm3

d.

5.34 g/cm3

Question number: 502

» States of Matter » Solid State » Packing in Solids (Fcc, Bcc and Hcp Lattices)

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MCQ▾

Question

In the face centered cubic structure, what will be the contribution of atoms per unit cell?

Choices

Choice (4) Response

a.

1

b.

2

c.

3

d.

4

Question number: 503

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

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MCQ▾

Question

Density of lithium atom is 0.53 g/cm3. The edge length of lithium is 3.5 A°. Find out the number of lithium atoms in a unit cell. Atomic mass of lithium is 6.94?

Choices

Choice (4) Response

a.

2

b.

2.5

c.

1

d.

3.3

Question number: 504

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

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MCQ▾

Question

The atomic radius (r) in simple cubic unit cell is?

Choices

Choice (4) Response

a.

2a

b.

a/4

c.

a/2

d.

a/√2

Question number: 505

» States of Matter » Solid State » Packing in Solids (Fcc, Bcc and Hcp Lattices)

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MCQ▾

Question

Chromium metal crystallizes with a body centered cubic lattice. The length of the unit cell edge is found to be 287 pm. Calculate the atomic radius?

Choices

Choice (4) Response

a.

2.19 A°

b.

1.85 A°

c.

1.98 A°

d.

2.56 A°

Question number: 506

» States of Matter » Solid State » Imperfection in Solids

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MCQ▾

Question

What type of defect will be occurred in FeS solid?

Choices

Choice (4) Response

a.

Metal deficiency defect

b.

Anion vacancies

c.

Dislocation defect

d.

Interstitial defect