NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 486 - 491 of 1258

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Question number: 486

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

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Question

What is the shape of a crystal system in which

Choices

Choice (4) Response

a.

Triclinic

b.

Hexagonal

c.

Tetragonal

d.

Rhombohedra

Question number: 487

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

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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.

AB

c.

A2B

d.

Question does not provide sufficient data or is vague

Question number: 488

» States of Matter » Solid State » Classification of Solids

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

Definite geometry

b.

Sharp melting point

c.

High intermolecular point

d.

Isotropic

Question number: 489

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

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MCQ▾

Question

If ammonium chloride crystallizes in as body centered lattice with a unit distance of 387 pm, then what is the distance between oppositely charged ions in the lattice?

Choices

Choice (4) Response

a.

375.5 pm

b.

335.15pm

c.

321 pm

d.

387pm

Question number: 490

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

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MCQ▾

Question

The geometrical form consisting only of a regular array of points in space is called?

Choices

Choice (4) Response

a.

Lattice

b.

Cube

c.

Unit cell

d.

Crystal

Question number: 491

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

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MCQ▾

Question

If the distance between sodium ions and chloride ions in NaCl crystal is 265 pm, then edge length of the unit cell will be?

Choices

Choice (4) Response

a.

530 pm

b.

132.5 pm

c.

265 pm

d.

765 pm