NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 514 - 520 of 1258

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Question number: 514

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

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MCQ▾

Question

The unit cell cube length for LiCl is 5.14 A°. Assuming anion-anion contact, calculate the ionic radius for chloride ion?

Choices

Choice (4) Response

a.

1.45 A°

b.

2.45 A°

c.

2.34 A°

d.

1.82 A°

Question number: 515

» States of Matter » Solid State » Classification of Solids

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MCQ▾

Question

Which one of the following has highest melting point?

Choices

Choice (4) Response

a.

Covalent crystal

b.

Amorphous crystal

c.

Molecular crystal

d.

Ionic crystal

Question number: 516

» States of Matter » Solid State » Electrical, Magnetic and Dielectric Properties

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MCQ▾

Question

When Arsenic is dopped to Germanium, what will be the resulting semiconductor?

Choices

Choice (4) Response

a.

Intrinsic semiconductor

b.

n-semiconductor

c.

p-type semiconductor

d.

Question does not provide sufficient data or is vague

Question number: 517

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

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MCQ▾

Question

Which of the following ionic salts has the wurtzite type of crystal structure?

Choices

Choice (4) Response

a.

CaO

b.

ZnS

c.

NaCl

d.

KBr

Question number: 518

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

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MCQ▾

Question

With increasing temperature the electrical conductivity in metallic crystals is?

Choices

Choice (4) Response

a.

Decreases

b.

Do not effect

c.

Increases

d.

Question does not provide sufficient data or is vague

Question number: 519

» States of Matter » Solid State » Imperfection in Solids

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MCQ▾

Question

If molten NaCl contains little amount of CaCl2, this leads to which defect?

Choices

Choice (4) Response

a.

Impurity defect

b.

Metal deficiency defect

c.

Frankel defect

d.

Metal excess defect

Question number: 520

» States of Matter » Solid State » Unit Cell and Lattices

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MCQ▾

Question

In the crystal of CsCl, the nearest neighbors of each Cs ion are?

Choices

Choice (4) Response

a.

6 Cs ions

b.

8 Cs ions

c.

8 chloride ions

d.

6 chloride ions