NEET Chemistry: Questions 483 - 488 of 677

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Question number: 483

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

MCQ▾

Question

At room temperature, sodium crystallizes in body centered cubic lattice with a=4.24A°. Calculate the theoretical density of sodium?

Choices

Choice (4) Response
a.

1.002 g/cm3

b.

3.5 g/cm3

c.

2.004 g/cm3

d. Question does not provide sufficient data or is vague

Question number: 484

» States of Matter » Solid State » Imperfection in Solids

MCQ▾

Question

Which of the following defect causes decrease in the density of a crystal?

Choices

Choice (4) Response
a.

Frenkel

b.

Interstitial

c.

F-centered

d.

Shottky

Question number: 485

» States of Matter » Solid State » Imperfection in Solids

MCQ▾

Question

Which of the following compound is also known as Berthollide compound?

Choices

Choice (4) Response
a.

Vanadium oxide

b.

Ferrous oxide

c.

Zinc oxide

d. All a. , b. and c. are correct

Question number: 486

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

MCQ▾

Question

What is the shape of a crystal system in which a=b=candα=β=γ90?

Choices

Choice (4) Response
a.

Hexagonal

b.

Rhombohedra

c.

Tetragonal

d.

Triclinic

Question number: 487

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

MCQ▾

Question

A compound formed by elements A and B crystallizes in cubic structure where A atoms are the corners of a cube and B atoms are at face centered. What is the formula of the compound?

Choices

Choice (4) Response
a.

AB3

b.

A2B

c.

AB

d. Question does not provide sufficient data or is vague

Question number: 488

» States of Matter » Solid State » Classification of Solids

MCQ▾

Question

Which one of the following is not the property of crystalline solid?

Choices

Choice (4) Response
a.

Definite geometry

b.

High intermolecular point

c.

Isotropic

d.

Sharp melting point

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